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https://issues.apache.org/jira/browse/IGNITE-14892?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vyacheslav Koptilin resolved IGNITE-14892.
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Resolution: Duplicate
> Bug in GridCacheWriteBehindStore Flusher thread lookup
> ------------------------------------------------------
>
> Key: IGNITE-14892
> URL: https://issues.apache.org/jira/browse/IGNITE-14892
> Project: Ignite
> Issue Type: Bug
> Components: cache
> Affects Versions: 2.8, 2.7.5, 2.7.6, 2.9, 2.8.1, 2.10, 2.9.1
> Reporter: Mike W
> Priority: Major
>
> There's a bug in GridCacheWriteBehindStore in the flusher method.
> [https://github.com/apache/ignite/blob/master/modules/core/src/main/java/org/apache/ignite/internal/processors/cache/store/GridCacheWriteBehindStore.java#L674]
> The logic states there that if flush thread count is not a power of 2, then
> perform some math that is not guaranteed to return a positive number. For
> example, if you pass this string as a key it returns a negative number:
> accb2e8ea33e4a89b4189463cacc3c4e
> and then throws an array out of bounds exception when looking up the thread.
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