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Vikas Saurabh commented on OAK-8513: ------------------------------------ Added ignored test case at [r1863918|https://svn.apache.org/r1863918]. > Concurrent index access via CopyOnRead directory can lead to reading directly > off of remote > ------------------------------------------------------------------------------------------- > > Key: OAK-8513 > URL: https://issues.apache.org/jira/browse/OAK-8513 > Project: Jackrabbit Oak > Issue Type: Improvement > Components: lucene > Reporter: Vikas Saurabh > Assignee: Vikas Saurabh > Priority: Major > > Even with prefetch enabled having 2 CopyOnRead directories pointing to same > index can lead to one of the instance reading index files directly off of > remote index. > The reason this happens is because {{COR#copyFilesToLocal}} explicitly > chooses to work with remote if index copier reports that a copy is in > progress. > This wasn't a problem earlier when COR was only used via IndexTracker so > concurrent COR instances weren't expected (COR's avoid local for conc copy > was probably worried about non-prefetch case). > But with OAK-8097, {{DefaultDirectoryFactory}} also uses COR to bring the > files. Which means that if there's a query against an index which is getting > updated as well then either of COR instance could read directly from remote. > The condition should only be relevant during early app start up but since > this can happen in default configuration, we should attempt to fix this. -- This message was sent by Atlassian JIRA (v7.6.14#76016)