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Posted to dev@apex.apache.org by "bright chen (JIRA)" <ji...@apache.org> on 2016/09/22 18:30:20 UTC

[jira] [Created] (APEXMALHAR-2262) lock on is too AbstractManagedStateImpl.getValueFromBucketSync wide

bright chen created APEXMALHAR-2262:
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             Summary: lock on is too AbstractManagedStateImpl.getValueFromBucketSync wide
                 Key: APEXMALHAR-2262
                 URL: https://issues.apache.org/jira/browse/APEXMALHAR-2262
             Project: Apache Apex Malhar
          Issue Type: Improvement
            Reporter: bright chen
            Assignee: bright chen


The Managed State used a lot of lock, which could impact a lot on performance. 
AbstractManagedStateImpl.getValueFromBucketSync(long, long, Slice) lock the buck to get value, But if the value still in memory, the lock is not necessary as flash is ConcurrentMap.

probably AbstractManagedStateImpl should only lock when add/remove bucket. And bucket handle read/write lock inside bucket
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