[jira] [Created] (APEXCORE-590) Failed to restart application on MapR

["Pradeep A. Dalvi (JIRA)" <ji...@apache.org>]

Pradeep A. Dalvi created APEXCORE-590:
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             Summary: Failed to restart application on MapR
                 Key: APEXCORE-590
                 URL: https://issues.apache.org/jira/browse/APEXCORE-590
             Project: Apache Apex Core
          Issue Type: Bug
            Reporter: Pradeep A. Dalvi
            Assignee: Pradeep A. Dalvi


For restarting application, we try to copy previous app state i.e. checkpoints directory from original app. Before doing so, we try to delete 'checkpoints' directory from newly launched application directory. MapR-FS throws an exception since that directory is not present yet, hence we fail to copy checkpoints from original app.
Need to catch exception around fs.delete(checkpointPath, true); in copyInitialState function of StramClient.

16/12/16 12:48:03 INFO stram.StramClient: Restart from maprfs:/user/dtadmin/datatorrent/apps/application_1481890072066_0004
16/12/16 12:48:03 INFO Configuration.deprecation: io.bytes.per.checksum is deprecated. Instead, use dfs.bytes-per-checksum
16/12/16 12:48:03 ERROR fs.MapRFileSystem: Failed to delete path maprfs:/user/dtadmin/datatorrent/apps/application_1481890072066_0005/checkpoints, error: No such file or directory (2)
16/12/16 12:48:03 INFO stram.FSRecoveryHandler: Creating maprfs:/user/dtadmin/datatorrent/apps/application_1481890072066_0005/recovery/lo



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