On 24.09.2013 14:42, marian.kruc...@gmail.com wrote:
CREATE INDEX ON tstzrange fail on 9.3.0 and 9.2.4 - default postgres
configuration.
It ate whole memory and was killed by oom.
Example:
postgres=# CREATE TABLE range_test AS SELECT tstzrange(t, t+'1min') tr FROM
generate_series('2000-1-1'::TIMESTAMPTZ, '2010-1-1'::TIMESTAMPTZ, '1min') AS
t1(t);
SELECT 5260321
postgres=# CREATE INDEX ON range_test(tr);
WARNING: terminating connection because of crash of another server process
DETAIL: The postmaster has commanded this server process to roll back the
current transaction and exit, because another server process exited
abnormally and possibly corrupted shared memory.
HINT: In a moment you should be able to reconnect to the database and
repeat your command.
The connection to the server was lost. Attempting reset: Failed.
A-ha, the comparison function of range datatypes, range_cmp(), detoasts
its arguments, but fails to free the detoasted copies. Functions are
normally not required to free such temporary copies - the memory is
usually leaked into a short-lived memory context that will be quickly
free'd anyway - but B-tree comparison operators are expected to not leak.
Committed a fix, it will appear in the next minor releases. Thanks for
the report!
- Heikki
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