[pgpool-committers: 1303] pgpool: Avoid to run out free query cache hash index entry.

[Tatsuo Ishii]

Avoid to run out free query cache hash index entry.

If hash index entries are run out, pgpool-II cannot reuse old cache
entry because pgpool-II always expects there's at least one empty hash
index entry. To mitigate the problem, if free hash index entries are run
out, look for victim cache block to reuse the hash index entry.

Per bug #70.

Branch
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master

Details
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http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=d6c447df5d292b9fe6456051fe48502956fdf193

Modified Files
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src/query_cache/pool_memqcache.c |   19 +++++++++++++++++++
1 file changed, 19 insertions(+)