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From "Andy Isaacson (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3828) Block Scanner rescans blocks too frequently
Date Tue, 21 Aug 2012 20:10:38 GMT
Andy Isaacson created HDFS-3828:
-----------------------------------

             Summary: Block Scanner rescans blocks too frequently
                 Key: HDFS-3828
                 URL: https://issues.apache.org/jira/browse/HDFS-3828
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.0.0-alpha
            Reporter: Andy Isaacson
            Assignee: Andy Isaacson


Branching off from HDFS-3194:

Andy said:
{quote}
There is still an issue here even with the patch from hdfs-3194-1.txt. Running on a cluster
with just one block we now see
{noformat}
2012-08-16 15:59:57,884 INFO  datanode.BlockPoolSliceScanner (BlockPoolSliceScanner.java:verifyBlock(391))
- Verification succeeded for BP-2101131164-172.29.122.91-1337906886255:blk_7919273167187535506_4915
2012-08-16 16:00:07,904 INFO  datanode.BlockPoolSliceScanner (BlockPoolSliceScanner.java:verifyBlock(391))
- Verification succeeded for BP-2101131164-172.29.122.91-1337906886255:blk_7919273167187535506_4915
2012-08-16 16:00:17,925 INFO  datanode.BlockPoolSliceScanner (BlockPoolSliceScanner.java:verifyBlock(391))
- Verification succeeded for BP-2101131164-172.29.122.91-1337906886255:blk_7919273167187535506_4915
{noformat}
{quote}
Uma said:
bq. Latest patch from Amith should address this issue. 

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