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Posted to notifications@accumulo.apache.org by GitBox <gi...@apache.org> on 2018/11/21 22:16:15 UTC
[GitHub] keith-turner commented on issue #775: fixes #774 removed race
condition in lru cache
keith-turner commented on issue #775: fixes #774 removed race condition in lru cache
URL: https://github.com/apache/accumulo/pull/775#issuecomment-440827173
[Rfile](https://accumulo.apache.org/docs/2.x/getting-started/design#rfile) data blocks contain a sequential list of key values. These data blocks can be cached. For cached data blocks that are frequently accessed Accumulo builds an index. The index is associated with the cached block. This bug was caused by a thread trying to update the index of a block that was evicted from the cache. This scenario should not cause an exception. This change should avoid the exception.
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