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Posted to gitbox@activemq.apache.org by GitBox <gi...@apache.org> on 2019/11/15 21:37:24 UTC

[GitHub] [activemq-artemis] brusdev opened a new pull request #2894: ARTEMIS-2538 Removing all messages from a huge queue causes OOM

brusdev opened a new pull request #2894: ARTEMIS-2538 Removing all messages from a huge queue causes OOM
URL: https://github.com/apache/activemq-artemis/pull/2894
 
 
   The PageSubscriptionImpl.cleanupEntries could be locked by the queue
   depage because they are executed with the same executor and the depage
   could be locked by the iterQueue.
   If PageSubscriptionImpl.cleanupEntries is locked, no one clean up the
   JournalRecord and PagePositionImpl instances created during iterQueue.
   So removing all messages from a huge queue, causes the retention of too
   JournalRecord and PagePositionImpl instances until an OOM.
   To avoid to lock the PageSubscriptionImpl.cleanupEntries the depage is
   executed only if the queue isn't iterating.

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