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Posted to hdfs-dev@hadoop.apache.org by "Viraj Jasani (Jira)" <ji...@apache.org> on 2021/06/21 08:59:00 UTC

[jira] [Created] (HDFS-16082) Avoid non-atomic operations on exceptionsSinceLastBalance and failedTimesSinceLastSuccessfulBalance in Balancer

Viraj Jasani created HDFS-16082:
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             Summary: Avoid non-atomic operations on exceptionsSinceLastBalance and failedTimesSinceLastSuccessfulBalance in Balancer
                 Key: HDFS-16082
                 URL: https://issues.apache.org/jira/browse/HDFS-16082
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Viraj Jasani
            Assignee: Viraj Jasani


Balancer has introduced 2 volatile int as part of HDFS-13783 namely: exceptionsSinceLastBalance and failedTimesSinceLastSuccessfulBalance. However, we are performing non-atomic operations on it. Since non-atomic operations done here mostly depend on their previous values, we should use AtomicInteger for both.



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