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https://issues.apache.org/jira/browse/LUCENE-6745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14701961#comment-14701961
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Michael McCandless commented on LUCENE-6745:
--------------------------------------------
bq. Should the test have a shotgun? BTW, I would prefer using ExecutorService
for the test.
I prefer to keep concurrency constructs to a minimum ... I think it's important
that our tests are approachable.
And the bug repros fine w/o the shotgun.
> RAMInputStream.clone is not thread safe
> ---------------------------------------
>
> Key: LUCENE-6745
> URL: https://issues.apache.org/jira/browse/LUCENE-6745
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: Trunk, 5.4
>
> Attachments: LUCENE-6745.patch
>
>
> This took some time to track down ... it's the root cause of the RangeTree
> failures that [~steve_rowe] found at
> https://issues.apache.org/jira/browse/LUCENE-6697?focusedCommentId=14696999&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14696999
> The problem happens when one thread is using the original IndexInput
> (RAMInputStream) from a RAMDirectory, but other threads are also cloning
> that IndexInput at the same time.
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