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Posted to hdfs-issues@hadoop.apache.org by "Haohui Mai (JIRA)" <ji...@apache.org> on 2014/02/27 23:01:21 UTC

[jira] [Created] (HDFS-6029) Secondary NN fails to checkpoint after -rollingUpgrade prepare

Haohui Mai created HDFS-6029:
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             Summary: Secondary NN fails to checkpoint after -rollingUpgrade prepare
                 Key: HDFS-6029
                 URL: https://issues.apache.org/jira/browse/HDFS-6029
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Haohui Mai
            Assignee: Jing Zhao


If Secondary NN crashes right after calling {{dfsadmin -rollingUpgrade prepare}}, it fails to checkpoint because it fails to download the newest fsimage whose name is {{fsimage_rollback_txid}}.

To reproduce this bug:

# Run NN and SNN.
# Run {{dfsadmin -rollingUpgrade prepare}}.
# Shutdown SNN, clear all fsimage created by SNN.
# Restart SNN, SNN tries to download the {{fsimage_txid}} instead of {{fsimage_rollback_txid}}, resulting the failure.



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