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https://issues.apache.org/jira/browse/ACCUMULO-1252?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Newton resolved ACCUMULO-1252.
-----------------------------------
Resolution: Fixed
Fix Version/s: 1.4.4
Assignee: Eric Newton
> Race condition in BulkImport causes ConcurrentModificationException
> -------------------------------------------------------------------
>
> Key: ACCUMULO-1252
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1252
> Project: Accumulo
> Issue Type: Bug
> Affects Versions: 1.4.2
> Reporter: William Slacum
> Assignee: Eric Newton
> Fix For: 1.4.4
>
>
> The LoadFiles class gets a synchronized list of files to import and, while
> iterating over that list, creates another list of Callable's. If the list of
> files to load is long enough, it's possible that a bulk import on a previous
> file in the list could finish and remove itself from the master list before
> all of the commands to import the rest of the files are created. This causes
> a ConcurrentModificationException when trying to fetch the next file to load.
> I think the concurrent lists support an iterator that will not fail if the
> underlying list is modified, but if not, I think this can be solved by first
> creating a list of Callables and then adding them to the thread pool in a
> separate loop.
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