diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/access/transam/xlogrecovery.c | 20 |
1 files changed, 11 insertions, 9 deletions
diff --git a/src/backend/access/transam/xlogrecovery.c b/src/backend/access/transam/xlogrecovery.c index c14d1f3ef63..2a5352f8793 100644 --- a/src/backend/access/transam/xlogrecovery.c +++ b/src/backend/access/transam/xlogrecovery.c @@ -3145,10 +3145,12 @@ ReadRecord(XLogPrefetcher *xlogprefetcher, int emode, } /* - * Read the XLOG page containing RecPtr into readBuf (if not read already). - * Returns number of bytes read, if the page is read successfully, or - * XLREAD_FAIL in case of errors. When errors occur, they are ereport'ed, but - * only if they have not been previously reported. + * Read the XLOG page containing targetPagePtr into readBuf (if not read + * already). Returns number of bytes read, if the page is read successfully, + * or XLREAD_FAIL in case of errors. When errors occur, they are ereport'ed, + * but only if they have not been previously reported. + * + * See XLogReaderRoutine.page_read for more details. * * While prefetching, xlogreader->nonblocking may be set. In that case, * returns XLREAD_WOULDBLOCK if we'd otherwise have to wait for more WAL. @@ -3156,11 +3158,11 @@ ReadRecord(XLogPrefetcher *xlogprefetcher, int emode, * This is responsible for restoring files from archive as needed, as well * as for waiting for the requested WAL record to arrive in standby mode. * - * 'emode' specifies the log level used for reporting "file not found" or - * "end of WAL" situations in archive recovery, or in standby mode when - * promotion is triggered. If set to WARNING or below, XLogPageRead() returns - * XLREAD_FAIL in those situations, on higher log levels the ereport() won't - * return. + * xlogreader->private_data->emode specifies the log level used for reporting + * "file not found" or "end of WAL" situations in archive recovery, or in + * standby mode when promotion is triggered. If set to WARNING or below, + * XLogPageRead() returns XLREAD_FAIL in those situations, on higher log + * levels the ereport() won't return. * * In standby mode, if after a successful return of XLogPageRead() the * caller finds the record it's interested in to be broken, it should |