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From "Haibo Chen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-4766) NM should not aggregate logs older than the retention policy
Date Fri, 04 Mar 2016 17:45:40 GMT
Haibo Chen created YARN-4766:
--------------------------------

             Summary: NM should not aggregate logs older than the retention policy
                 Key: YARN-4766
                 URL: https://issues.apache.org/jira/browse/YARN-4766
             Project: Hadoop YARN
          Issue Type: Bug
          Components: log-aggregation, nodemanager
            Reporter: Haibo Chen
            Assignee: Haibo Chen


When a log aggregation fails on the NM the information is for the attempt is kept in the recovery
DB. Log aggregation can fail for multiple reasons which are often related to HDFS space or
permissions.

On restart the recovery DB is read and if an application attempt needs its logs aggregated,
the files are scheduled for aggregation without any checks. The log files could be older than
the retention limit in which case we should not aggregate them but immediately mark them for
deletion from the local file system.



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