diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/include/config.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/include/config.h b/src/include/config.h index d75c21961ee..ede1a8184d6 100644 --- a/src/include/config.h +++ b/src/include/config.h @@ -77,5 +77,20 @@ query commands and causes a SIGSEGV trying to execute commands without plan. */ #define FUNC_UTIL_PATCH +/* + +Async notifies received while a backend is in the middle of a begin/end +transaction block are lost by libpq when the final end command is issued. + +The bug is in the routine PQexec of libpq. The routine throws away any +message from the backend when a message of type 'C' is received. This +type of message is sent when the result of a portal query command with +no tuples is returned. Unfortunately this is the case of the end command. +As all async notification are sent only when the transaction is finished, +if they are received in the middle of a transaction they are lost in the +libpq library. I added some tracing code to PQexec and this is the output: + +*/ +#define PQ_NOTIFY_PATCH #endif /* CONFIG_H */ |