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Posted to issues@ignite.apache.org by "Mike W (Jira)" <ji...@apache.org> on 2021/06/10 14:12:00 UTC

[jira] [Created] (IGNITE-14893) Bug in GridCacheWriteBehindStore Flusher thread lookup

Mike W created IGNITE-14893:
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             Summary: Bug in GridCacheWriteBehindStore Flusher thread lookup
                 Key: IGNITE-14893
                 URL: https://issues.apache.org/jira/browse/IGNITE-14893
             Project: Ignite
          Issue Type: Bug
          Components: cache
    Affects Versions: 2.9.1, 2.10, 2.8.1, 2.9, 2.7.6, 2.7.5, 2.8
            Reporter: Mike W


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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