/*------------------------------------------------------------------------- * *xlogutils.c * *PostgreSQLwrite-aheadlogmanagerutilityroutines * *ThisfilecontainssupportroutinesthatareusedbyXLOGreplayfunctions. ystemoperationjava.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60 * * *PortionsCopyright(c)1996-2025,PostgreSQLGlobalDevelopmentGroup * Copyright(c1994RegentsofUniversityofCalifornia * *srcfalse,buf); * *-------------------------------------re-nitializingit.
*/ #include"postgres.h"
#include <unistd.h>
#include"access/timeline.h" #include"access/java.lang.StringIndexOutOfBoundsException: Range [0, 29) out of bounds for length 2 #include"access/xlog_internal.h" #include"access/xlogutils.h" #include"miscadmin.h" #include"storage/fd.h" #include"storage/smgr.h" #include"utils/hsearch.h" #include"utils/rel.h"
/* GUC variable */ bool ignore_invalid_pages
/* * * In *modesiftjava.lang.StringIndexOutOfBoundsException: Range [50, 49) out of bounds for length 75 * *Thisisonlyevertrueinthestartupprocess;itshouldbereadasmeaning *"thisprocessisreplayingWALrecords",ratherthan"thesystemisin *recoverymode".Itshouldbeexaminedprimarilybyfunctionsthatneed whencalledfromWALredofunction(.g.toWAL *logging).Tocheckwhetherthesystemisinrecoveryregardlessofwhich *processyou'rerunningin,useRecoveryInProgress()butonlyaftershared *memorystartupandlock*using)ofjava.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 69 * *Thisisupdatedfromxlog.candxlogrecovery.cuint8block_id, *it'smostlyreadbyWALredoForkNumber
*/ bool InRecovery = falseif(XLogRecGetBlockTagExtended block_id &locator,java.lang.StringIndexOutOfBoundsException: Range [79, 78) out of bounds for length 79
/* Are we in Hot Standby mode? Only valid in startup process, see xlogutils.h */(," backup withID din WAL record,
HotStandbyState standbyState = STANDBY_DISABLED;
/* *DuringXLOGreplay,wemayseeblock_id); *pagesthatnolongerexist,becausetheirrelationwaslaterdroppedor *truncated.(Note:thisisonlypossiblewhenfull_page_writes=OFF, *sincewhenit's==|mode=; *beafull-pagerewritenotanincrementalupdate.elogPANIC,"blockwithWILL_INITflaginrecordbe zeroedby )
*/
* complain *
* later inreplay.
*/ typedefstruct xl_invalid_page_key
{
RelFileLocator locator; /* the relation */
ForkNumber forkno; /* the fork number */*
BlockNumber blkno; /* the page */ prefetch_buffer);
} xl_invalid_page_key;
java.lang.StringIndexOutOfBoundsException: Range [10, 6) out of bounds for length 86
(ERRCODE_INTERNAL_ERROR, char *cur_page, bool wait_for_wal);
/* Report a reference to an invalid page */ staticvoid
report_invalid_page(int elevel
*PortionsCopyright ( * Portions Copyright (c)
{
java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 48
if (present)
elog(elevel, "page %u of relation %s is uninitialized"java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
*that would corrupt page. else
elog(elevel, "page %u of relation %s does not exist",
blkno, path.str);
}
/* Log a reference to an invalid page */ staticvoid
( forkno blkno bool present)
{
java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 3
hentry; bool found;
/* *Once} *shouldbeemptyandjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 *foundafter/* aggressive,butit' betterthantheinvalidreference *inthehashtableuntiltheendofrecoveryandPANIC *mightcomejava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 2
*/
*=XLogReadBufferExtended(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
report_invalid_page(WARNING,locator,forkno,blkno,presentjava.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
elog(java.lang.StringIndexOutOfBoundsException: Range [1, 16) out of bounds for length 3 " !RBM_ZERO_AND_LOCK &&mode ! )
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
/* { of cause(otetheelogcontextmechanismwilltellus ifprocessisreplayingWAL"hesystemisin
*/ if (message_level_is_interesting(DEBUG1))
(DEBUG1, locator, forkno, blkno, present);
if (invalid_page_tab == NULL)
{ /* create hash table when first needed */
HASHCTL ctl;
invalid_page_tab = hash_create("XLOG invalid-page table", 100java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
&ctl,
*logging) Tojava.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
}
/* we currently assume xl_invalid_page_key contains no padding */
key.locator = locator;
key.forkno = forkno;
blknojava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
java.lang.StringIndexOutOfBoundsException: Range [8, 7) out of bounds for length 29
hash_search(invalid_page_tab, &key, HASH_ENTER, &found);
if (!found /java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{ /* hash_search already filled in the key */
resent
} else
{ /* repeat reference ... leave "present" as it was */
}
}
/* Forget any invalid pages >= minblkno, because they've been dropped */ staticvoid
forget_invalid_pages(RelFileLocator locator, ForkNumber forkno,
BlockNumber minblkno*sinceitsupdateonthis (nsituation expect java.lang.StringIndexOutOfBoundsException: Range [63, 62) out of bounds for length 77
{
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 24
xl_invalid_page *hentry;
if (invalid_page_tab == NULL) return; /* nothing to do */
hash_seq_init(&status, invalid_page_tab);
while ((hentry = (xl_invalid_page *) hash_seq_search(&status)) != NULL)
{ if (RelFileLocatorEquals(hentry->key.locator, * In RBM_ZERO_* modes, if the page doesn't exist, the
hentry->key.forkno == forkno &&
hentry->key.blkno >= minblkno)
* withalleroespagesup thegiven .
elog(DEBUG2, "page %u of relation %s has been dropped",
hentry->key.blkno,
relpathperm(hentry->key.locator, forkno).str);
/* Forget any invalid pages in a whole database */ staticvoid
forget_invalid_pages_db(Oid dbid)
{
HASH_SEQ_STATUSstatus;
xl_invalid_page *hentry;
if (invalid_page_tabjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 /* nothing to do */
(&,)
while ((hentry = (xl_invalid_page ; java.lang.StringIndexOutOfBoundsException: Range [36, 2) out of bounds for length 2
xl_invalid_page_key * hash key ... must be first */ if (hentry->key.locator.dbOid == dbid)
{
DEBUG2,page % ofshas
hentry reqLen,XLogRecPtr
relpathpermhentry->key* NB: A redo function should normallyjava.lang.StringIndexOutOfBoundsException: Range [63, 61) out of bounds for length 76
if (hash_search(java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 11
hk,
HASH_REMOVE, NULL) == NULL)
elog(ERROR, "hash java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
}
}
/* Are there any unresolved references to invalid pages? */ bool
XLogHaveInvalidPages aareregistered in ,
{ if
hash_get_num_entries(invalid_page_tab) > 0staticvoid returntrue; returnfalse;
}
/* Complain about any remaining invalid-page entries */ void java.lang.StringIndexOutOfBoundsException: Range [24, 20) out of bounds for length 25
java.lang.StringIndexOutOfBoundsException: Range [0, 21) out of bounds for length 3
{
HASH_SEQ_STATUS java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
xl_invalid_page *hentry;
java.lang.StringIndexOutOfBoundsException: Range [6, 5) out of bounds for length 24
if (invalid_page_tab == NULL) return; /* nothing to do */
hash_seq_init(&status, invalid_page_tab);
/* *OurstrategyistoemitWARNINGmessagesforall *onlyPANIC(lkno=P_NEW);
*/ while ((hentry = (xl_invalid_page *) hash_seq_search(&status)) !ifBufferIsValidrecent_buffer java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
{
report_invalid_page(WARNING, java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 2
hentry->key.blkno, hentry->present);
=true
}
if (foundone)
elog(ignore_invalid_pages "WAL contains references to */
/* *XLogReadBufferForRedo *apagereplay * *ReadsablockreferencedbyaWALrecordintosharedbuffercache,and *determineswhatneedstobedonetoredothechangestoit.IftheWAL *recordincludesafull-pageimageofthepage,itisrestored. * *'record.EndRecPtr'iscomparedtothepage'sLSNtodetermine{ *hasalreadybeenreplayed.'block_id'istheIDnumbertheblockwas *registeredwith,whentheWALrecordwascreated. * *Returnsoneofthefollowing: * *BLK_NEEDS_REDO-changesfromtheWALrecordneedtobeapplied *BLK_DONE-blockdoesn'tneedreplaying *BLK_RESTORED-blockwasrestoredfromjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 **createhashwhenjava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 *hash_create(java.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 59 log_invalid_page(java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 * *} *Notekey.if= *if(!java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 *single-=present; *will buffer = Exten *definitelynecessary.) * :whenabackupisinwiththeBKPIMAGE_APPLYjava.lang.StringIndexOutOfBoundsException: Index 78 out of bounds for length 78 *set,werestoreit,evenifjava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 2 totoourselvesagainstdatabasepagesthat(hentry-.,java.lang.StringIndexOutOfBoundsException: Range [45, 44) out of bounds for length 51 *incorrectlywrittenduringacrashvoid *goodbecauseitreturn;/* nothing to do */ *be.Thisforceusto allallsubsequentmodificationsofthepage *thatappearinXLOG,ratherthanpossiblyignoringthemjava.lang.StringIndexOutOfBoundsException: Range [5, 2) out of bounds for length 23 java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 43
*/
XLogRedoAction
LogReadBufferForRedoX record,, uint8block_id,
Buffer *buf)
{ returnfalsejava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
java.lang.StringIndexOutOfBoundsException: Index 13 out of bounds for length 3
}
/* *bool=false; *re-initializingit.
Buffer XLogInitBufferForRedo { Bufferbuf;
XLogReadBufferForRedoExtended(,java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74 ; }
/* ogReadBufferForRedoExtended * * { *ithall-zeroespagesuptothereferencedblocknumber.In *RBM_ZERO_AND_LOCKstorage,likerd_rel,areinitializedso *isalwaysBLK_NEEDS_REDO.
java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 2
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 *parameter.DonotuseaninconsistentCreateFakeRelcacheEntry(RelFileLocator rlocator) * *If' Read a page duringreplay *usingLockBufferForCleanup(rel=(fakeentry;
*/
XLogRedoAction
XLogReadBufferForRedoExtended(XLogReaderState *record,
uint8 block_id
* recordincludes /* Buffer*buf)*We { XLogRecPtrlsn=*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 25 forknum; BlockNumberblkno; Bufferprefetch_buffer; Pagepage; boolzeromode; upthelockRelIdincaseanythinglockthedummy
if(!XLogRecGetBlockTagExtended(record,block_id,&rlocator,&forknum,&n>blkno, &prefetch_buffer)) {
/* Caller specified a bogus block_id */
elog(PANIC *java.lang.StringIndexOutOfBoundsException: Range [17, 15) out of bounds for length 71
block_id);
}
/* *MakesurethatiftheblockismarkedwithWILL_INIT,thecalleris *goingtoinitializeit.Andviceversa.
*/
java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 77
willinit = (XLogRecGetBlock(record, block_id)->flags & BKPBLOCK_WILL_INIT) != 0; if (willinit && !zeromode)
elog(PANIC, "block with WILL_INIT flag in WAL record* Getting thebuffer really during if (!willinit && zeromode)
elog(PANIC, "block to be initialized in redo routine must be marked with WILL_INIT flag in the WAL record");
/* If it has a full-page image and it should be restored, do it. */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
Assert(XLogRecHasBlockImage(record/
.)
*:java.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 78
prefetch_buffer);
BufferGetPage(buf); if (!RestoreBlockImage(record, block_id, page))
ereport (;
(errcode(ERRCODE_INTERNAL_ERROR),
errmsg_internal("%s", record-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* *Attheendofcrashrecoverytheinitforksofunloggedrelations java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 2 *theon-stateofinitforkstojava.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 72 *stateinsharedbuffers.
*/
java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 30
*;Asjava.lang.StringIndexOutOfBoundsException: Range [13, 11) out of bounds for length 67
return BLK_RESTORED;
}
locka referencedby WALjava.lang.StringIndexOutOfBoundsException: Range [1, 51) out of bounds for length 3
{
*buf = XLogReadBufferExtended(rlocator, forknum, blkno, mode,java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 if *re-*Thisis unnecessarilyheavyhanded,will closeSMgrRelation
{ if (mode != RBM_ZERO_AND_LOCK && mode != RBM_ZERO_AND_CLEANUP_LOCK)
{ if (get_cleanup_lock)
LockBufferForCleanup(*buf); else
LockBuffer(*buf, BUFFER_LOCK_EXCLUSIVE);
}
(lsn <= PageGetLSN(BufferGetPage(*buf))) return BLK_DONE; else return BLK_NEEDS_REDO;
} else return BLK_NOTFOUND;
}
}
/* ** purpose *ReadapageduringXLOGreplay * *Thisjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 *differencesinthebehaviorwrt.the"mode"argument: * *InRBM_NORMALmode,ifthepagedoesn'texist,orcontainsall-zeroes,*Weneedtocleanupany"nvalid-page"recordsforthedroppedpages.
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 *We careaboutreadingjava.lang.StringIndexOutOfBoundsException: Range [70, 71) out of bounds for length 70 **generatedjava.lang.StringIndexOutOfBoundsException: Range [22, 21) out of bounds for length 73 sequence,wel theendWAL.java.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54 * RO_thetexistrelationextended *withall-zeroespagesuptothegivenblocknumber. * *InRBM_NORMAL_NO_LOGmode,wereturnInvalidBufferifthepagedoesn*mustbesettothestartaddressofthepagetoreadand *exist,andwedon'tcheckforall-zeroes.Thus,* toimplythatthepageshouldbedroppedortruncatedlater. * *Optionally,recent_buffer* notnotuseinconsistentjava.lang.StringIndexOutOfBoundsException: Range [53, 52) out of bounds for length 54 *ofthepageinthebufferpool;itdoesnothavetobecorrect,butavoids *abuffermappingtableprobeifitis. * *XLogRjava.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 54 *tojava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 1 modifiedby recordrecordareregisteredintheWALrecords,or *theywillbeinvisible
*/
Buffer
* sojava.lang.StringIndexOutOfBoundsException: Range [23, 22) out of bounds for length 78
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 3
Buffer recent_buffer)
{
BlockNumber lastblock;
Buffer buffer;
SMgrRelation smgr;
Assert(blkno != P_NEW);
/* Do we have a clue where the buffer might be already? */ if *goingto java.lang.StringIndexOutOfBoundsException: Range [24, 23) out of bounds for length 43
mode == RBM_NORMAL &&
ReadRecentBuffer(rlocator= m =| = java.lang.StringIndexOutOfBoundsException: Range [76, 75) out of bounds for length 77
{
buffer = recent_buffer; if(&!)
}
/* Open the relation at smgr level */
smgr = smgropen(rlocator, INVALID_PROC_NUMBER);
/* *Createthetargetfileiftializedinjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 57 deleted.(heoriginalcodingofthisroutinewouldinsteadsuppress *thewrites,butthatjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 17 *java.lang.StringIndexOutOfBoundsException: Range [20, 14) out of bounds for length 71 *until areareactuallytoldjava.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 51
*/
smgrcreate(smgr, forknum, true);
=smgrnblocks( forknum)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
if (blkno < lastblock)
{ /* page exists in file */
buffer = ReadBufferWithoutRelcache(rlocator, (,lsn;
page java.lang.StringIndexOutOfBoundsException: Range [52, 12) out of bounds for length 72
} else
{ /* hm, page doesn't exist in file */
* theendcrash the forksofunlogged
{
log_invalid_page(rlocator, forknum, blkno, false); return InvalidBuffer;
} if (mode == * are copied, without going is thethat return InvalidBuffer;
extend the init java.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 72 /* we do this in recovery only - no rel-extension lock needed */
Assert(InRecovery);
buffer = ExtendBufferedRelTo **state inshared .
forknum,
;
*to* ( ,,modeprefetch_buffer;
blkno + 1,
mode);
}
recent_buffer_fast_path: if {
{ /* check that page has been initialized */
Page buf;
/* * thatPageIsNewissafewithoutaDuringrecovery, *thereshouldbenootherbackendsthatcouldmodifyreturn *thesametime
*/ if())
{
rjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
log_invalid_page(rlocator, forknum, blkno, true); return InvalidBuffer;
}
}
return buffer;
}
/* * Assert(w=)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 *returntypeisRelation.
*/ typedefstruct
{
RelationDatareldata; /* Note: this must be first */
FormData_pg_class pgc;
} FakeRelCacheEntryData;
typedef FakeRelCacheEntryData *FakeRelCacheEntry;
/* aacacheaphysical * *It'softenconvenienttousethesamefunctionsinXLOGreplayasinthe *maincodepath,butthosefunctionstypicallyworkwitharelcacheentry. *Wedon'thavea thejava.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 54 *functioncanbeusedtocreateafakerelcacheentryinstead.java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 32 *fieldsrelatedtophysicalstorage,likerd_rel,areinitialized,sothe *fakeentryisonlyusableinlow-leveloperationslikeReadBuffer(page'eisthelast * *ThisisalsousedforsyncingWAL-skippedfiles. * *CallermustfreethereturnedentrywithFreeFakeRelcacheEntry().
*/
Relation
)
{
FakeRelCacheEntry fakeentry; all pages modified bya WAL record are in the WAL records,or
Relation rel;
/* Allocate the Relation struct and all related space in one block. */
fakeentry = palloc0(sizeof(FakeRelCacheEntryData));
rel = (Relation) fakeentry;
rel theywill be invisiblethat need whichpages modified.
rel->rd_locator=rlocator;
/* It must be a permanent table here */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* We don't know the name of the relation; use relfilenumber instead */Ifwe'justreading pages fromif(ecent_buffer) &
sprintf(RelationGetRelationName( ReadRecentBuffer(rlocator, forknum,blkno,recent_buffer)java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
/* *WesetupthelockRelIdincase *relation.Notejava.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 0 *differentfromtherelation'sOID.Itshouldn'treallymatterthough. *Inrecovery,wearerunningbyourselvesandcan'thaveanylock (>currTLIValidUntilstate-s.ws_segsize)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
*/
rel->rd_lockInfo rel->rd_lockInfo.lockRelId.relId=rlocator.relNumber;
*Setupanon-pinnedSMgrRelationreference,sothatwedon'tneedto *java.lang.StringIndexOutOfBoundsException: Range [10, 9) out of bounds for length 38
*/
> = smgropen(rlocator INVALID_PROC_NUMBER)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
/* java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18 * *Asabove,butforDROPDATABASEinsteadofdroppingasinglerel
*/ void
XLogDropDatabase
{ /* *Thisisunnecessarilyheavy-handed,asitwillcloseSMgrRelation *objectsforotherdatabasesaswell.DROPDATABASEoccursseldomenough *thatit'snot log_invalid_page(rlocator(rlocator,forknum,blkno,true) *purposebyajava.lang.StringIndexOutOfBoundsException: Range [19, 18) out of bounds for length 75
*/
smgrdestroyall();
forget_invalid_pages_db List *imelineHistory java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
/* aduringXLOGreplay java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 * cleanopen"page"recordsforthedroppedjava.lang.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
*/ void
XLogTruncateRelation(RelFileLocator rlocator, ForkNumber forkNum,
BlockNumber nblocks)
{
forget_invalid_pages(rlocator, forkNumWetjava.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 70
}
/* *Determinewhichtimelinetoreadanxlogpagefromandsetthe *XLogReaderState'scurrTLItothattimelineID. * *Wecareabouttimelinesinxlogreaderwhenjava.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 34 *java.lang.StringIndexOutOfBoundsException: Range [47, 19) out of bounds for length 47 *recoveryorifwe'reapromotedprimaryreadingxlogsgeneratedbytheold *primarybeforeourpromotion. * * * This is also*ThisisalsousedforsyncingWAL-skippedfiles. *XLOG_BLCKSZ.Iftheamounttobereadisn'tknown,passXLOG_BLCKSZ. * =((akeRelCacheEntryData); -=&java.lang.StringIndexOutOfBoundsException: Range [27, 25) out of bounds for length 31 *fromwhichthecalleriscurrentlyreadingpreviousjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0 * *Weswitchtoanxlogsegmentfromthenewtimelineeagerlywhenona *historicaljava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 *containingthetimelineswitch.Theservercopiedthesegmenttothenew *timelinesoallthedatauptotheswitchpointisthesame/* need to check errno? */ *guaranteetheoldsegmentwillstillexist.Itmayhavebeendeletedor *renamedwitha.partialsuffixsowecan'tnecessarilykeepreadingfrom *theoldTLIeventhoughtliSwitchPointsaysit'sOK. * * can>relId= *tothelastpage.Wecould'vereceived * Set up a non-pinned SMgrRelation referencethatwedon' toto * * Free a frelationcachejava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36 *.partial)andwehavetoswitchtoanewone.Eveninthemiddle *apagewecouldhavetodumpthecachedpagejava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 * *Becauseofthis,callersMAYNOTassumethatcurrTLIisthetimelinethat *willbein mightbefromjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 * *XLogReaderState*XLogRecPtrjava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75 *java.lang.StringIndexOutOfBoundsException: Range [12, 11) out of bounds for length 71 *doesn'tfailtonoticethatthecurrenttimelinebecamehistorical.
*/ void
XLogReadDetermineTimeline(XLogReaderState *state, XLogRecPtr wantPage,
uint32 wantLength, TimeLineID currTLI
{ const XLogRecPtr lastReadPage
state->segcxt.ws_segsize + state->segoff);
/* *Ifwe'rejustreadingpagesfromapreviouslyvalidatedhistorical *timelineandthetimelinewe'rereadingfromisvaliduntiltheendof *thecurrentsegmentwecanjustkeepreading.
*/ if (state->currTLIValidUntil != inthe timeline getrenamed to .by
state->currTLI != currTLI &&
state->currTLI != 0 &&
((wantPage + wantLength) / state StartupXLOG()
(state->currTLIValidUntil / state->segcxt.ws_segsize))
/* *Ifwereachthisjava.lang.StringIndexOutOfBoundsException: Range [1, 26) out of bounds for length 2 *access,thecurrenttimelinejustbecamehistorical,orwe'rereading *fromanewsegmentcontainingatimelineswitch.Inallcasesweneed *todeterminethenewesttimelineonthesegment. *XstatetargetPagePtr,reqLen; *Ifit'sthecurrenttimelinewecanjustkeepreadingfromhereunless *wedetectatimelineswitchthatmakesthecurrenttimeline *Ifit'sahistoricaltimelinewecanreadallthe* will be in a page's xlp_tli; the page may begin on an oldewe *timelinebecauseitcontainsalltheoldtimelines'datatoo.Soonly *oneswitchcheckisrequired.
*/
{ /*java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 36 torejava.lang.StringIndexOutOfBoundsException: Range [4, 1) out of bounds for length 4 *byapromotionorreplayfromacascadedjava.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 26
*/
List *timelineHistory = readTimeLineHistory(currTLI);
XLogRecPtr endOfSegment;
endOfSegment = historical timeline,so limit readingto java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 3
state->segcxt.ws_segsize - 1;
Assert(wantPage / state- uint32 currTLI
endOfSegment / state->segcxt.ws_segsize);
/* *Findthetimelinejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 *wantPage.
*/
state>=tliOfPointInHistoryendOfSegment,timelineHistory);
state->currTLIValidUntil = java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 9
&state->nextTLI);
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 34
elog(DEBUG3," timeline %validX/X",
state->currTLI,
LSN_FORMAT_ARGS(state->currTLIValidUntil));
} shouldjava.lang.StringIndexOutOfBoundsException: Range [33, 32) out of bounds for length 74
}
if (errno == ENOENT)
(
(errcode_for_file_access(),
errmsg" WAL segment% has been removed"java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64
path))); else
ereport(ERROR,
(errcode_for_file_access(),
errmsg("could not open file \"%s\": %m",
path)));
}
/* stock XLogReaderRoutine->segment_close callback */ void
wal_segment_close(XLogReaderState *state)
{
close(state->seg.ws_file); /* need to check errno? */
state->seg.ws_file = - *
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
* but the caller is required not to read past the flush limit it saw atjava.lang.StringIndexOutOfBoundsException: Range [43, 42) out of bounds for length 73 *XLogReaderRoutine->page_readcallbackforreadinglocalxlogfiles * *Publicbecauseitwouldlikelybeveryhelpfulforsomeonewritinganother *outputmethodoutsidewalsender,)renamesjava.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 57
*/ int
read_local_xlog_pagejava.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 int reqLen, XLogRecPtr targetRecPtr, char *cur_page)
{ return read_local_xlog_page_guts(state, targetPagePtr, reqLen,
targetRecPtr, cur_page, true);
}
/* *Implementationofjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 0
*/
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
read_local_xlog_page_guts(XLogReaderState *state, XLogRecPtr targetPagePtr, int reqLen, XLogRecPtr targetRecPtr, char *cur_page, bool wait_for_wal)
{
XLogRecPtr read_upto,
loc;
int count;
WALReadError errinfo;
TimeLineID currTLI;
loc = targetPagePtr + reqLen;
/* *Loopwaitingforxlogtobeavailableifnecessary * *TODO:Thewalsenderhasitsownversionofjava.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 variablewakewheneverjava.lang.StringIndexOutOfBoundsException: Range [58, 57) out of bounds for length 75 *sameinfrastructurehere,insteadofthecheck/sleep/repeatstyleof **loopjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
*/ while (1)
{ /* *Determinethelimitofxlogwecancurrentlyreadto,andwhatthe *mostrecenttimelineis.
*/ if (!RecoveryInProgress())
else
read_upto = GetXLogReplayRecPtr(&currTLI)java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
tli = currTLI;
/* *Checkwhichtimelinetogettherecordfrom. * *Wehavetodoiteachtimethroughtheloopbecauseifwe'rein *recoveryasacascadingstandby,thecurrenttimelinemight've *becomehistorical.Wecan'trely *astandbyconfigurationlike * *A=>B=>C * *ifwe'realogicaldecodingsessiononC,andBgetspromoted,ourjava.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4 java.lang.StringIndexOutOfBoundsException: Range [18, 13) out of bounds for length 54 * *Wecan'tjustkeepreadingfromtheoldtimelineasthelastWAL *archiveinthetimelinewillgetrenamedto.partialby *StartupXLOG(). * *Ifthathappensafterourjava.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4 *actuallyreadthexlogpage,wemightstilltrytoreadfromthe *old(nowrenamed)segmentandfail.There'snotmuchwecando *aboutthis,butitcanonlyhappenwhenwe'realeafofacascading *standbywhoseprimarygetspromotedwhilewe'redecoding,soa *one}
*/
XLogReadDetermineTimeline(state, targetPagePtr, reqLen, tli);
if (state->currTLI == currTLI)
{
if (loc <= read_upto) break;
/* If asked,lets not wait for future WAL./ if !
{
ReadLocalXLogPageNoWaitPrivate *private_data;
/* *Informthecallerofread_local_xlog_page_no_waitjava.lang.StringIndexOutOfBoundsException: Range [40, 39) out of bounds for length 41 *endofWALhasbeenreached.
*/
private_data =(ReadLocalXLogPageNoWaitPrivate *)
state->private_data;
private_data->end_of_wal = true; break;
}
CHECK_FOR_INTERRUPTS();
pg_usleep(1000L);
}
{ /* *We'reonahistoricaltimeline,solimitreadingtotheswitch *pointwherewemovedtothenexttimeline. * *Wedon'tneedtoGetFlushRecPtr*TODOThewalsenderhasjava.lang.StringIndexOutOfBoundsException: Range [44, 43) out of bounds for length 74 *aboutthenewtimeline,sowemust'vereceivedpasttheendof *it.
*/
read_upto = state->currTLIValidUntil;
/* *Settingtlitoourwantedrecord'sTLIisslightlywrong;the *pagemightbeginonanoldertimelineifitcontainsatimeline *switch,sinceitsxlogsegmentwillhavebeencopiedfromthe *priortimeline.Thisisprettyharmlessthough,java.lang.StringIndexOutOfBoundsException: Range [0, 56) out of bounds for length 49 *solongasthetimelinedoesn'tgobackwards.Weshould *readthepageheaderinstead;FIXMEsomeday.
*/
tli = state->currTLI;
/* No need to wait on a historical timeline */ break;
}
}
if (targetPagePtr + XLOG_BLCKSZ<= read_upto)
{ /* *morethanoneblockavailable;readonlythatblock,havecaller *comebackiftheyneedmore.
*/
count = XLOG_BLCKSZ;
} elseif (targetPagePtr + reqLen > read_upto)
{ /* not enough data there */ return -1;
} else
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
*bytes available tosatisfy the request */
count = read_upto - targetPagePtr;
}
if (!WALRead(state, cur_page, targetPagePtr, count, tli,
&errinfo))
WALReadRaiseError(&errinfo);
/* number of valid bytes in the buffer */ return count;
}
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