/*
* Request the fault-prober to suspend probes -- no fault actions will
* be taken based on in-flight probes until the prober is unpaused.
*/
bool
gpvars_assign_gp_fts_probe_pause(bool newval, bool doit, GucSource source)
{
if (doit)
{
/*
* We only want to do fancy stuff on the master (where we have a prober).
*/
if (ftsProbeInfo && AmIMaster())
{
/*
* fts_pauseProbes is externally set/cleared;
* fts_cancelProbes is externally set and cleared by FTS
*/
ftsLock();
ftsProbeInfo->fts_pauseProbes = newval;
ftsProbeInfo->fts_discardResults = ftsProbeInfo->fts_discardResults || newval;
ftsUnlock();
/*
* If we're unpausing, we want to force the prober to
* re-read everything. (we want FtsNotifyProber()).
*/
if (!newval)
{
FtsNotifyProber();
}
}
gp_fts_probe_pause = newval;
}
return true;
}
/*
* Error out when
* - the guc is enable
* - and users try to access catalog - pg_attribute on segments
*/
static void
disable_attribute_check(Oid attrelid)
{
if (Gp_role != GP_ROLE_DISPATCH && !AmIMaster()
&& gp_disable_catalog_access_on_segment)
{
if (attrelid > FirstNormalObjectId)
elog(ERROR, "invalid pg_attribute access on segments");
}
}
/*
* Error out when
* - the guc is enable
* - and users try to access catalog on segments
*/
void
disable_catalog_check(cqContext *pCtx, HeapTuple tuple)
{
if (Gp_role != GP_ROLE_DISPATCH && !AmIMaster()
&& gp_disable_catalog_access_on_segment)
{
if (!is_builtin_object(pCtx, tuple))
elog(ERROR, "invalid catalog access on segments (catalog relid: %d)",
pCtx->cq_relationId);
}
}
/*
* Returns true if Metadata Versioning is enabled in the current
* context
*/
bool
mdver_enabled(void)
{
/*
* We only initialized Metadata Versioning on the master,
* and only for QD or utility mode process.
* MD Versioning can also be disabled by the guc gp_metadata_versioning.
*/
/* TODO gcaragea 05/06/2014: Do we need to disable MD Versioning during (auto)vacuum? (MPP-23504) */
return gp_metadata_versioning &&
AmIMaster() &&
((GP_ROLE_DISPATCH == Gp_role) || (GP_ROLE_UTILITY == Gp_role));
}
static int
FaultInjector_NewHashEntry(
FaultInjectorEntry_s *entry)
{
FaultInjectorEntry_s *entryLocal=NULL;
bool exists;
int status = STATUS_OK;
LockAcquire();
if ((faultInjectorShmem->faultInjectorSlots + 1) >= FAULTINJECTOR_MAX_SLOTS) {
LockRelease();
status = STATUS_ERROR;
ereport(WARNING,
(errmsg("could not insert fault injection, no slots available"
"fault name:'%s' fault type:'%s' ",
FaultInjectorIdentifierEnumToString[entry->faultInjectorIdentifier],
FaultInjectorTypeEnumToString[entry->faultInjectorType])));
snprintf(entry->bufOutput, sizeof(entry->bufOutput),
"could not insert fault injection, max slots:'%d' reached",
FAULTINJECTOR_MAX_SLOTS);
goto exit;
}
if (entry->faultInjectorType == FaultInjectorTypeSkip)
{
switch (entry->faultInjectorIdentifier)
{
case Checkpoint:
case ChangeTrackingDisable:
case FileRepVerification:
case FinishPreparedTransactionCommitPass1FromCreatePendingToCreated:
case FinishPreparedTransactionCommitPass2FromCreatePendingToCreated:
case FinishPreparedTransactionCommitPass1FromDropInMemoryToDropPending:
case FinishPreparedTransactionCommitPass2FromDropInMemoryToDropPending:
case FinishPreparedTransactionCommitPass1AbortingCreateNeeded:
case FinishPreparedTransactionCommitPass2AbortingCreateNeeded:
case FinishPreparedTransactionAbortPass1FromCreatePendingToAbortingCreate:
case FinishPreparedTransactionAbortPass2FromCreatePendingToAbortingCreate:
case FinishPreparedTransactionAbortPass1AbortingCreateNeeded:
case FinishPreparedTransactionAbortPass2AbortingCreateNeeded:
case SyncPersistentTable:
case XLOGInsert:
break;
default:
LockRelease();
status = STATUS_ERROR;
ereport(WARNING,
(errmsg("could not insert fault injection, fault type not supported"
"fault name:'%s' fault type:'%s' ",
FaultInjectorIdentifierEnumToString[entry->faultInjectorIdentifier],
FaultInjectorTypeEnumToString[entry->faultInjectorType])));
snprintf(entry->bufOutput, sizeof(entry->bufOutput),
"could not insert fault injection, fault type not supported");
goto exit;
}
}
/* check role */
getFileRepRoleAndState(&fileRepRole, &segmentState, &dataState, NULL, NULL);
switch (entry->faultInjectorIdentifier)
{
case ChangeTrackingDisable:
case FileRepConsumerVerification:
case FileRepResync:
case FileRepResyncInProgress:
case FileRepResyncWorker:
case FileRepResyncWorkerRead:
case FileRepTransitionToInResyncMirrorReCreate:
case FileRepTransitionToInResyncMarkReCreated:
case FileRepTransitionToInResyncMarkCompleted:
case FileRepTransitionToInSyncBegin:
case FileRepTransitionToInSync:
case FileRepTransitionToInSyncMarkCompleted:
case FileRepTransitionToInSyncBeforeCheckpoint:
case FileRepTransitionToChangeTracking:
case FileRepConsumer:
case FileRepSender:
case FileRepReceiver:
case FileRepFlush:
/* Ashwin */
case FileRepChangeTrackingCompacting:
case FinishPreparedTransactionCommitPass1FromCreatePendingToCreated:
case FinishPreparedTransactionCommitPass2FromCreatePendingToCreated:
case FinishPreparedTransactionCommitPass1FromDropInMemoryToDropPending:
case FinishPreparedTransactionCommitPass2FromDropInMemoryToDropPending:
case FinishPreparedTransactionCommitPass1AbortingCreateNeeded:
case FinishPreparedTransactionCommitPass2AbortingCreateNeeded:
case FinishPreparedTransactionAbortPass1FromCreatePendingToAbortingCreate:
// case FinishPreparedTransactionAbortPass2FromCreatePendingToAbortingCreate:
case FinishPreparedTransactionAbortPass1AbortingCreateNeeded:
case FinishPreparedTransactionAbortPass2AbortingCreateNeeded:
case TwoPhaseTransactionCommitPrepared:
case TwoPhaseTransactionAbortPrepared:
/* This kind of fault injection has not been supported yet. */
LockRelease();
status = STATUS_ERROR;
ereport(WARNING,
(errmsg("This kind of fault injection has not been supported yet. "
"fault name:'%s' fault type:'%s' ",
FaultInjectorIdentifierEnumToString[entry->faultInjectorIdentifier],
FaultInjectorTypeEnumToString[entry->faultInjectorType])));
snprintf(entry->bufOutput, sizeof(entry->bufOutput),
"This kind of fault injection has not been supported yet. "
"Please check faultname");
goto exit;
// case SubtransactionFlushToFile:
// case SubtransactionReadFromFile:
// case SubtransactionRelease:
// case SubtransactionRollback:
case StartPrepareTx:
case TransactionCommitPass1FromCreatePendingToCreated:
case TransactionCommitPass1FromDropInMemoryToDropPending:
case TransactionCommitPass1FromAbortingCreateNeededToAbortingCreate:
case TransactionAbortPass1FromCreatePendingToAbortingCreate:
case TransactionAbortPass1FromAbortingCreateNeededToAbortingCreate:
case TransactionCommitPass2FromDropInMemoryToDropPending:
case TransactionCommitPass2FromAbortingCreateNeededToAbortingCreate:
case TransactionAbortPass2FromCreatePendingToAbortingCreate:
case TransactionAbortPass2FromAbortingCreateNeededToAbortingCreate:
case FaultBeforePendingDeleteRelationEntry:
case FaultBeforePendingDeleteDatabaseEntry:
case FaultBeforePendingDeleteTablespaceEntry:
case FaultBeforePendingDeleteFilespaceEntry:
case TransactionAbortAfterDistributedPrepared:
case DtmBroadcastPrepare:
case DtmBroadcastCommitPrepared:
case DtmBroadcastAbortPrepared:
case DtmXLogDistributedCommit:
case AnalyzeSubxactError:
case OptTaskAllocateStringBuffer:
case ConnectionFailAfterGangCreation:
case CreateCdbDispathResultObject:
case WorkerManagerSubmitJob:
case FaillQeAfterConnection:
/* These faults are designed for master. */
if(!AmIMaster())
{
LockRelease();
status = STATUS_ERROR;
ereport(WARNING,
(errmsg("could not insert fault injection entry into table, "
"This kind of fault injection should be sent to master. "
"fault name:'%s' fault type:'%s' ",
FaultInjectorIdentifierEnumToString[entry->faultInjectorIdentifier],
FaultInjectorTypeEnumToString[entry->faultInjectorType])));
snprintf(entry->bufOutput, sizeof(entry->bufOutput),
"could not insert fault injection. "
"This kind of fault injection should be sent to master. "
"Please use \"-r master\"");
goto exit;
}
break;
case SegmentTransitionRequest:
case SegmentProbeResponse:
/* We do not use vmem on master. Therefore, we only attempt large palloc on segments. */
case MultiExecHashLargeVmem:
case FailQeWhenDoQuery:
case FailQeWhenBeginParquetScan:
/* SEGMENT */
if(!AmISegment())
{
LockRelease();
status = STATUS_ERROR;
ereport(WARNING,
(errmsg("could not insert fault injection entry into table, "
"This kind of fault injection should be sent to segment. "
"fault name:'%s' fault type:'%s' ",
FaultInjectorIdentifierEnumToString[entry->faultInjectorIdentifier],
FaultInjectorTypeEnumToString[entry->faultInjectorType])));
snprintf(entry->bufOutput, sizeof(entry->bufOutput),
"could not insert fault injection. "
"This kind of fault injection should be sent to segment. "
"Please use \"-r primary\"");
goto exit;
}
break;
case LocalTmRecordTransactionCommit:
case Checkpoint:
case AbortTransactionFail:
case UpdateCommittedEofInPersistentTable:
case FaultDuringExecDynamicTableScan:
case ExecSortBeforeSorting:
case FaultExecHashJoinNewBatch:
case WorkfileCleanupSet:
case RunawayCleanup:
/* MASTER OR SEGMENT */
if(AmIStandby())
{
LockRelease();
status = STATUS_ERROR;
ereport(WARNING,
(errmsg("could not insert fault injection entry into table, "
"segment not in primary or master role, "
"fault name:'%s' fault type:'%s' ",
FaultInjectorIdentifierEnumToString[entry->faultInjectorIdentifier],
FaultInjectorTypeEnumToString[entry->faultInjectorType])));
snprintf(entry->bufOutput, sizeof(entry->bufOutput),
"could not insert fault injection, segment not in master or segment role");
goto exit;
}
break;
default:
break;
}
entryLocal = FaultInjector_InsertHashEntry(entry->faultInjectorIdentifier, &exists);
if (entryLocal == NULL) {
LockRelease();
status = STATUS_ERROR;
ereport(WARNING,
(errmsg("could not insert fault injection entry into table, no memory, "
"fault name:'%s' fault type:'%s' ",
FaultInjectorIdentifierEnumToString[entry->faultInjectorIdentifier],
FaultInjectorTypeEnumToString[entry->faultInjectorType])));
snprintf(entry->bufOutput, sizeof(entry->bufOutput),
"could not insert fault injection, no memory");
goto exit;
}
if (exists) {
LockRelease();
status = STATUS_ERROR;
ereport(WARNING,
(errmsg("could not insert fault injection entry into table, "
"entry already exists, "
"fault name:'%s' fault type:'%s' ",
FaultInjectorIdentifierEnumToString[entry->faultInjectorIdentifier],
FaultInjectorTypeEnumToString[entry->faultInjectorType])));
snprintf(entry->bufOutput, sizeof(entry->bufOutput),
"could not insert fault injection, entry already exists");
goto exit;
}
entryLocal->faultInjectorType = entry->faultInjectorType;
entryLocal->sleepTime = entry->sleepTime;
entryLocal->ddlStatement = entry->ddlStatement;
if (entry->occurrence != 0)
{
entryLocal->occurrence = entry->occurrence;
}
else
{
entryLocal->occurrence = FILEREP_UNDEFINED;
}
strcpy(entryLocal->databaseName, entry->databaseName);
strcpy(entryLocal->tableName, entry->tableName);
entryLocal->faultInjectorState = FaultInjectorStateWaiting;
faultInjectorShmem->faultInjectorSlots++;
LockRelease();
elog(DEBUG1, "FaultInjector_NewHashEntry() identifier:'%s'",
FaultInjectorIdentifierEnumToString[entry->faultInjectorIdentifier]);
exit:
return status;
}
/*
* CreateSharedMemoryAndSemaphores
* Creates and initializes shared memory and semaphores.
*
* This is called by the postmaster or by a standalone backend.
* It is also called by a backend forked from the postmaster in the
* EXEC_BACKEND case. In the latter case, the shared memory segment
* already exists and has been physically attached to, but we have to
* initialize pointers in local memory that reference the shared structures,
* because we didn't inherit the correct pointer values from the postmaster
* as we do in the fork() scenario. The easiest way to do that is to run
* through the same code as before. (Note that the called routines mostly
* check IsUnderPostmaster, rather than EXEC_BACKEND, to detect this case.
* This is a bit code-wasteful and could be cleaned up.)
*
* If "makePrivate" is true then we only need private memory, not shared
* memory. This is true for a standalone backend, false for a postmaster.
*/
void
CreateSharedMemoryAndSemaphores(bool makePrivate, int port)
{
if (!IsUnderPostmaster)
{
PGShmemHeader *seghdr;
Size size;
int numSemas;
/*
* Size of the Postgres shared-memory block is estimated via
* moderately-accurate estimates for the big hogs, plus 100K for the
* stuff that's too small to bother with estimating.
*
* We take some care during this phase to ensure that the total size
* request doesn't overflow size_t. If this gets through, we don't
* need to be so careful during the actual allocation phase.
*/
size = 150000;
size = add_size(size, hash_estimate_size(SHMEM_INDEX_SIZE,
sizeof(ShmemIndexEnt)));
size = add_size(size, BufferShmemSize());
size = add_size(size, LockShmemSize());
size = add_size(size, workfile_mgr_shmem_size());
if (Gp_role == GP_ROLE_DISPATCH)
{
size = add_size(size, AppendOnlyWriterShmemSize());
}
/*
* On the master and standby master, we also allocate the
* Global Metadata Versioning shared cache
*/
if (AmIMaster()||AmIStandby())
{
size = add_size(size, mdver_shmem_size());
}
size = add_size(size, ProcGlobalShmemSize());
size = add_size(size, XLOGShmemSize());
size = add_size(size, CLOGShmemSize());
size = add_size(size, SUBTRANSShmemSize());
size = add_size(size, TwoPhaseShmemSize());
size = add_size(size, MultiXactShmemSize());
size = add_size(size, LWLockShmemSize());
size = add_size(size, ProcArrayShmemSize());
size = add_size(size, BackendStatusShmemSize());
size = add_size(size, SharedSnapshotShmemSize());
size = add_size(size, SInvalShmemSize());
size = add_size(size, PMSignalShmemSize());
size = add_size(size, ProcSignalShmemSize());
size = add_size(size, primaryMirrorModeShmemSize());
size = add_size(size, FreeSpaceShmemSize());
//size = add_size(size, AutoVacuumShmemSize());
size = add_size(size, FtsShmemSize());
size = add_size(size, SeqServerShmemSize());
size = add_size(size, WalSendServerShmemSize());
size = add_size(size, WalRedoServerShmemSize());
size = add_size(size, PersistentFileSysObj_ShmemSize());
size = add_size(size, PersistentFilespace_ShmemSize());
size = add_size(size, PersistentTablespace_ShmemSize());
size = add_size(size, PersistentDatabase_ShmemSize());
size = add_size(size, PersistentRelation_ShmemSize());
size = add_size(size, PersistentRelfile_ShmemSize());
size = add_size(size, Pass2Recovery_ShmemSize());
size = add_size(size, FSCredShmemSize());
if (Gp_role == GP_ROLE_DISPATCH || Gp_role == GP_ROLE_UTILITY)
{
size = add_size(size, MetadataCache_ShmemSize());
elog(LOG, "Metadata Cache Share Memory Size : %lu", MetadataCache_ShmemSize());
}
#ifdef FAULT_INJECTOR
size = add_size(size, FaultInjector_ShmemSize());
#endif
#ifdef EXEC_BACKEND
size = add_size(size, ShmemBackendArraySize());
#endif
#ifdef USE_TEST_UTILS
if (gp_simex_init)
{
// initialize SimEx
simex_init();
size = add_size(size, SyncBitVector_ShmemSize(simex_get_subclass_count()));
}
#endif
/* This elog happens before we know the name of the log file we are supposed to use */
elog(DEBUG1, "Size not including the buffer pool %lu",
(unsigned long) size);
size = add_size(size, BgWriterShmemSize());
size = add_size(size, CheckpointShmemSize());
/* freeze the addin request size and include it */
addin_request_allowed = false;
size = add_size(size, total_addin_request);
/* might as well round it off to a multiple of a typical page size */
size = add_size(size, BLCKSZ - (size % BLCKSZ));
/* Consider the size of the SessionState array */
size = add_size(size, SessionState_ShmemSize());
/*
* Create the shmem segment
*/
seghdr = PGSharedMemoryCreate(size, makePrivate, port);
InitShmemAccess(seghdr);
/*
* Create semaphores
*/
numSemas = ProcGlobalSemas();
numSemas += SpinlockSemas();
elog(DEBUG3,"reserving %d semaphores",numSemas);
PGReserveSemaphores(numSemas, port);
}
else
{
/*
* We are reattaching to an existing shared memory segment. This
* should only be reached in the EXEC_BACKEND case, and even then only
* with makePrivate == false.
*/
#ifdef EXEC_BACKEND
Assert(!makePrivate);
#else
elog(PANIC, "should be attached to shared memory already");
#endif
}
/*
* Set up shared memory allocation mechanism
*/
if (!IsUnderPostmaster)
InitShmemAllocation();
/*
* Now initialize LWLocks, which do shared memory allocation and are
* needed for InitShmemIndex.
*/
if (!IsUnderPostmaster)
CreateLWLocks();
/*
* Set up shmem.c index hashtable
*/
InitShmemIndex();
primaryMirrorModeShmemInit();
/*
* Set up xlog, clog, and buffers
*/
XLOGShmemInit();
CLOGShmemInit();
SUBTRANSShmemInit();
TwoPhaseShmemInit();
MultiXactShmemInit();
FtsShmemInit();
InitBufferPool();
/*
* Set up lock manager
*/
InitLocks();
/*
* Set up append only writer
*/
if (Gp_role == GP_ROLE_DISPATCH)
{
InitAppendOnlyWriter();
}
PersistentFileSysObj_ShmemInit();
PersistentFilespace_ShmemInit();
PersistentTablespace_ShmemInit();
PersistentDatabase_ShmemInit();
PersistentRelation_ShmemInit();
PersistentRelfile_ShmemInit();
Pass2Recovery_ShmemInit();
if (Gp_role == GP_ROLE_DISPATCH || Gp_role == GP_ROLE_UTILITY)
{
MetadataCache_ShmemInit();
}
if (!IsUnderPostmaster)
{
/* Set up process table */
InitProcGlobal(PostmasterGetMppLocalProcessCounter());
}
/* Initialize SessionState shared memory array */
SessionState_ShmemInit();
/* Initialize vmem protection */
GPMemoryProtect_ShmemInit();
CreateSharedProcArray();
CreateSharedBackendStatus();
/*
* Set up Shared snapshot slots
*
* TODO: only need to do this if we aren't the QD. for now we are just
* doing it all the time and wasting shemem on the QD. This is
* because this happens at postmaster startup time when we don't
* know who we are.
*/
CreateSharedSnapshotArray();
/*
* Set up shared-inval messaging
*/
CreateSharedInvalidationState();
/*
* Set up free-space map
*/
InitFreeSpaceMap();
/*
* Set up interprocess signaling mechanisms
*/
PMSignalShmemInit();
ProcSignalShmemInit();
BgWriterShmemInit();
CheckpointShmemInit();
//AutoVacuumShmemInit();
SeqServerShmemInit();
WalSendServerShmemInit();
WalRedoServerShmemInit();
#ifdef FAULT_INJECTOR
FaultInjector_ShmemInit();
#endif
#ifdef USE_TEST_UTILS
if (gp_simex_init)
{
// initialize shmem segment for SimEx
simex_set_sync_bitvector_container(
SyncBitVector_ShmemInit("SimEx bit vector container", simex_get_subclass_count()));
}
#endif /* USE_TEST_UTILS */
/*
* Set up other modules that need some shared memory space
*/
BTreeShmemInit();
workfile_mgr_cache_init();
FSCredShmemInit();
/*
* On the master and standby master, we also allocate the
* Global Metadata Versioning shared cache
*/
if (AmIMaster() || AmIStandby())
{
mdver_shmem_init();
}
#ifdef EXEC_BACKEND
/*
* Alloc the win32 shared backend array
*/
if (!IsUnderPostmaster)
ShmemBackendArrayAllocation();
#endif
if (gp_resqueue_memory_policy != RESQUEUE_MEMORY_POLICY_NONE)
{
SPI_InitMemoryReservation();
}
/*
* Now give loadable modules a chance to set up their shmem allocations
*/
if (shmem_startup_hook)
shmem_startup_hook();
}
