Stefan Egli created OAK-2358:
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Summary: revisionGC leaves garbage around, for often-changed nodes
Key: OAK-2358
URL: https://issues.apache.org/jira/browse/OAK-2358
Project: Jackrabbit Oak
Issue Type: Bug
Components: core
Affects Versions: 1.0.8
Environment: 1.0.8.r1644758
Reporter: Stefan Egli
Priority: Critical
With oak-core 1.0.8.r1644758 we're seeing revision garbage piling up - even
though revisionGC runs regularly (every night) and does not complain about any
failures.
This happens with often-changed nodes, ie with nodes that get more changes that
fit into a mongo document, thus get split between revisionGC-runs.
As a negative side-effect of this, the observation event generating (ie
diffImpl) seems to have problems with such revision garbage and performs
tremendously slow - presumably because all garbage-revisions are read even
though the diff should be very small (ie the fromRev/toRev are only a few
seconds, if ever minutes apart) - but I'll file a separate ticket about this.
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