[jira] [Created] (OAK-2557) VersionGC uses way too much memory if there is a large pile of garbage

["Stefan Egli (JIRA)" <ji...@apache.org>]

Stefan Egli created OAK-2557:
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             Summary: VersionGC uses way too much memory if there is a large pile of garbage
                 Key: OAK-2557
                 URL: https://issues.apache.org/jira/browse/OAK-2557
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: core, mongomk
    Affects Versions: 1.0.11
            Reporter: Stefan Egli


It has been noticed that on a system where revision-gc (VersionGarbageCollector of mongomk) did not run for a few days (due to not interfering with some tests/large bulk operations) that there was such a large pile of garbage accumulating, that the following code
{code}
VersionGarbageCollector.collectDeletedDocuments
{code}
in the for loop, creates such a large list of NodeDocuments to delete (docIdsToDelete) that it uses up too much memory, causing the JVM's GC to constantly spin in Full-GCs.



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