On 01.03.2013 17:15, Jon Nelson wrote:
Using PostgreSQL 8.4.13 on ScientificLinux 6.3 (x86_64), I noticed
that a pg_dump ran out of (local) disk space.
However, the server was still using CPU and disk resources. An strace
clearly showed this pattern:
read() = 8192
sendto(...) = -1 EPIPE
-- SIGPIPE (Broken pipe) @
The server does detect the broken pipe. It logs the following messages:
637 LOG: 08006: could not send data to client: Connection reset by peer
638 LOCATION: internal_flush, pqcomm.c:1108
639 STATEMENT: COPY ... to stdout;
640 LOG: 08006: could not send data to client: Broken pipe
641 LOCATION: internal_flush, pqcomm.c:1108
642 STATEMENT: COPY ... to stdout;
This was fixed in version 9.2. Per release notes:
Cancel the running query if the client gets disconnected (Florian Pflug)
If the backend detects loss of client connection during a query, it will
now cancel the query rather than attempting to finish it.
COPY counts as a "running query".
--
- Heikki
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