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Posted to hdfs-dev@hadoop.apache.org by "Eli Collins (Created) (JIRA)" <ji...@apache.org> on 2011/12/06 00:01:39 UTC

[jira] [Created] (HDFS-2633) BPOfferService#isAlive is poorly named

BPOfferService#isAlive is poorly named
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                 Key: HDFS-2633
                 URL: https://issues.apache.org/jira/browse/HDFS-2633
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: data-node
    Affects Versions: 0.23.0
            Reporter: Eli Collins
            Priority: Minor


Per HDFS-2627 the current implementation returns true even if one of the actor threads is dead. "The only non-test use case for isAlive seems to be from BlockPoolSliceScanner and DataBlockScanner, where they're really trying to figure out whether they should stop scanning the block pool. If the BPOS is connected to any NN at all (regardless of active/standby) it needs to report true so that the scanners don't stop running. It would be nice to clean up these calls and specify in their function name that they're only meant for use in tests" and annotate @VisibleForTesting.



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