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https://issues.apache.org/jira/browse/OAK-5133?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tomek Rękawek updated OAK-5133:
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Fix Version/s: 1.4.12
> StoreArgument class getter method opens repo in read/write and unsafe MMAP
> mode
> -------------------------------------------------------------------------------
>
> Key: OAK-5133
> URL: https://issues.apache.org/jira/browse/OAK-5133
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: upgrade
> Affects Versions: 1.5.13
> Reporter: Arek Kita
> Assignee: Tomek Rękawek
> Priority: Critical
> Fix For: 1.5.14, 1.4.12, 1.6
>
>
> It seems that the getter method {{hasExternalBlobReferences()}} for a few
> implementations in scope of [the following
> commit|https://github.com/apache/jackrabbit-oak/commit/1cb749f87611e195515bf5998cbbedb0b9523c13#diff-f61fc3093dd3b539184a71f6dc5ab9b8R105]
> introduced a full source repo access routine that can cause serious lock
> issues (especially when opened in MMAP mode for Windows environments).
> Moreover, reinitialisation of {{StoreArguments}} leads to
> [OverlappingFileLockException|https://docs.oracle.com/javase/7/docs/api/java/nio/channels/OverlappingFileLockException.html].
> Such getter method should only open repository in read only mode (using
> {{buildReadOnly()}} of
> [FileStoreBuilder|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-segment/src/main/java/org/apache/jackrabbit/oak/plugins/segment/file/FileStore.java#L392])
> method.
> Considering setting MMAP always to false might be also a good idea to avoid
> buffer leakages (as getter should require as few features as possible) to be
> compatible.
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