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Posted to dev@lens.apache.org by "Arshad Matin (JIRA)" <ji...@apache.org> on 2015/02/05 13:00:49 UTC

[jira] [Created] (LENS-278) Lens Server not able to persist on HDFS

Arshad Matin created LENS-278:
---------------------------------

             Summary: Lens Server not able to persist on HDFS
                 Key: LENS-278
                 URL: https://issues.apache.org/jira/browse/LENS-278
             Project: Apache Lens
          Issue Type: Bug
            Reporter: Arshad Matin


When server.persist location is HDFS then lensserver is not able to persist the server state. And it is silently coming out without throwing any exception

{noformat}
05 Feb 2015 11:53:27,931 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisting server state in hdfs://lens/tmp/lensserver
05 Feb 2015 11:53:27,932 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisting state of service:session
05 Feb 2015 11:53:27,945 [Shutdown] INFO  org.apache.lens.server.session.HiveSessionService  - Session service pesristed 0 sessions
05 Feb 2015 11:53:27,967 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisted service session to hdfs://lens/tmp/lensserver/session.final
05 Feb 2015 11:53:27,967 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisting state of service:query
05 Feb 2015 11:53:27,970 [Shutdown] INFO  org.apache.lens.driver.hive.HiveDriver  - HiveDriver persisted 0 queries
05 Feb 2015 11:53:27,970 [Shutdown] INFO  org.apache.lens.driver.hive.HiveDriver  - HiveDriver persisted 0 sessions
05 Feb 2015 11:53:27,970 [Shutdown] INFO  org.apache.lens.server.query.QueryExecutionServiceImpl  - Persisted 0 queries
05 Feb 2015 11:53:27,986 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisted service query to hdfs://lens/tmp/lensserver/query.final
05 Feb 2015 11:53:27,986 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisting state of service:metastore
05 Feb 2015 11:53:28,004 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisted service metastore to hdfs://lens/tmp/lensserver/metastore.final
05 Feb 2015 11:53:28,004 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisting state of service:scheduler
05 Feb 2015 11:53:28,014 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisted service scheduler to hdfs://lens/tmp/lensserver/scheduler.final
05 Feb 2015 11:53:28,014 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisting state of service:quota
05 Feb 2015 11:53:28,024 [Shutdown] INFO  org.apache.lens.server.LensServices  - Persisted service quota to hdfs://lens/tmp/lensserver/quota.final
{noformat}

Files with their last modify time
{noformat}
/usr/local/lens$ hadoop fs -lsr /tmp/lensserver
lsr: DEPRECATED: Please use 'ls -R' instead.
drwxrwxrwx   - dataqa supergroup          0 2014-12-21 07:52 /tmp/lensserver/hdfsout
-rw-r--r--   3 dataqa supergroup          4 2015-02-01 17:20 /tmp/lensserver/metastore.final
-rw-r--r--   3 dataqa supergroup          4 2015-02-05 11:53 /tmp/lensserver/metastore.out
-rw-r--r--   3 dataqa supergroup        102 2015-02-01 17:20 /tmp/lensserver/query.final
-rw-r--r--   3 dataqa supergroup        102 2015-02-05 11:53 /tmp/lensserver/query.out
-rw-r--r--   3 dataqa supergroup          4 2015-02-01 17:20 /tmp/lensserver/quota.final
-rw-r--r--   3 dataqa supergroup          4 2015-02-05 11:53 /tmp/lensserver/quota.out
-rw-r--r--   3 dataqa supergroup          4 2015-02-01 17:20 /tmp/lensserver/scheduler.final
-rw-r--r--   3 dataqa supergroup          4 2015-02-05 11:53 /tmp/lensserver/scheduler.out
-rw-r--r--   3 dataqa supergroup         10 2015-02-01 17:20 /tmp/lensserver/session.final
-rw-r--r--   3 dataqa supergroup         10 2015-02-05 11:53 /tmp/lensserver/session.out
{noformat}

Temporary ".out" file is getting regularly updated but while server is exiting rename from ".out" to ".final" is not happening.



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