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Be more specific about OOM in XLogReaderAllocate 

A couple of spots can benefit from an added errdetail(), which matches
what we were already doing in other places; and those that cannot
withstand errdetail() can get a more descriptive primary message.

Author: Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Reviewed-by: Julien Rouhaud <rjuju123@gmail.com>
Discussion: https://postgr.es/m/CALj2ACV+cX1eM03GfcA=ZMLXh5fSn1X1auJLz3yuS1duPSb9QA@mail.gmail.com
This commit is contained in:
Alvaro Herrera 2021-11-22 13:43:43 -03:00
parent 042412879e
commit 2fed48f48f
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GPG Key ID: 1C20ACB9D5C564AE
5 changed files with 9 additions and 7 deletions
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2
src/backend/access/transam/xlog.c
View File

@ -1265,7 +1265,7 @@ XLogInsertRecord(XLogRecData *rdata,
if (!debug_reader)
{
appendStringInfoString(&buf, "error decoding record: out of memory");
appendStringInfoString(&buf, "error decoding record: out of memory while allocating a WAL reading processor");
}
else if (!DecodeXLogRecord(debug_reader, (XLogRecord *) recordBuf.data,
&errormsg))

3
src/backend/replication/logical/logical.c
View File

@ -202,7 +202,8 @@ StartupDecodingContext(List *output_plugin_options,
if (!ctx->reader)
ereport(ERROR,
(errcode(ERRCODE_OUT_OF_MEMORY),
errmsg("out of memory")));
errmsg("out of memory"),
errdetail("Failed while allocating a WAL reading processor.")));
ctx->reorder = ReorderBufferAllocate();
ctx->snapshot_builder =

3
src/backend/replication/walsender.c
View File

@ -681,7 +681,8 @@ StartReplication(StartReplicationCmd *cmd)
if (!xlogreader)
ereport(ERROR,
(errcode(ERRCODE_OUT_OF_MEMORY),
errmsg("out of memory")));
errmsg("out of memory"),
errdetail("Failed while allocating a WAL reading processor.")));
/*
* We assume here that we're logging enough information in the WAL for

6
src/bin/pg_rewind/parsexlog.c
View File

@ -74,7 +74,7 @@ extractPageMap(const char *datadir, XLogRecPtr startpoint, int tliIndex,
XL_ROUTINE(.page_read = &SimpleXLogPageRead),
&private);
if (xlogreader == NULL)
pg_fatal("out of memory");
pg_fatal("out of memory while allocating a WAL reading processor");
XLogBeginRead(xlogreader, startpoint);
do
@ -132,7 +132,7 @@ readOneRecord(const char *datadir, XLogRecPtr ptr, int tliIndex,
XL_ROUTINE(.page_read = &SimpleXLogPageRead),
&private);
if (xlogreader == NULL)
pg_fatal("out of memory");
pg_fatal("out of memory while allocating a WAL reading processor");
XLogBeginRead(xlogreader, ptr);
record = XLogReadRecord(xlogreader, &errormsg);
@ -192,7 +192,7 @@ findLastCheckpoint(const char *datadir, XLogRecPtr forkptr, int tliIndex,
XL_ROUTINE(.page_read = &SimpleXLogPageRead),
&private);
if (xlogreader == NULL)
pg_fatal("out of memory");
pg_fatal("out of memory while allocating a WAL reading processor");
searchptr = forkptr;
for (;;)

2
src/bin/pg_waldump/pg_waldump.c
View File

@ -1061,7 +1061,7 @@ main(int argc, char **argv)
.segment_close = WALDumpCloseSegment),
&private);
if (!xlogreader_state)
fatal_error("out of memory");
fatal_error("out of memory while allocating a WAL reading processor");
/* first find a valid recptr to start from */
first_record = XLogFindNextRecord(xlogreader_state, private.startptr);