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Added debug log to mysql_backend.c:gw_read_backend_event to tracm the case where less than 5 bytes is read from backend. This is potential issue with long result sets.

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VilhoRaatikka
2015-01-02 09:53:24 +02:00
parent 2eee4ae4fd
commit a745383956
1 changed files with 10 additions and 0 deletions
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10
server/modules/protocol/mysql_backend.c
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@ -510,6 +510,16 @@ static int gw_read_backend_event(DCB *dcb) {
if (nbytes_read < 5) /*< read at least command type */ if (nbytes_read < 5) /*< read at least command type */
{ {
rc = 0; rc = 0;
LOGIF(LD, (skygw_log_write_flush(
LOGFILE_DEBUG,
"%p [gw_read_backend_event] Read %d bytes "
"from DCB %p, fd %d, session %s. "
"Returning to poll wait.\n",
pthread_self(),
nbytes_read,
dcb,
dcb->fd,
dsc->session)));
goto return_rc; goto return_rc;
} }
/** There is at least length and command type. */ /** There is at least length and command type. */