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  1. Hadoop HDFS
  2. HDFS-14208

A large number missingblocks happend after failover to active.

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Details

    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Duplicate
    • 3.0.2, 3.1.1, 3.0.3
    • None
    • hdfs
    • None

    Description

      When cluster is very large, Standby startup takes about 1 hours. After Standby starts and exits SafeMode, a large number of missingblocks often appeared after failover from standby to active. And the missingblocks will  gradually disappear after 6 hours(block report interval).

      According the log and find only half the blocks of one DataNode be processed in SaftMode.

       

      Because the lease expired after processed some blocks of one DataNode.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. HDFS-12914 Block report leases cause missing blocks until next report

          • Critical - Crashes, loss of data, severe memory leak.
          • Resolved
          links to

          Web Link GitHub Pull Request #467

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              Unassigned Unassigned
              xuzq_zander ZanderXu
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              Dates

                Created:
                Updated:
                Resolved: