Hi,
I found that even read transaction waits for sync rep when it generates
WAL records even if XID is not assigned. For example, imagine the case
where SELECT query does a heap clean operation and generates
XLOG_HEAP2_CLEAN record. ISTM that such a read transaction doesn't
need to wait for sync rep because that's not visible to the client... Can
we skip waiting for sync rep if XID is not assigned?
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
