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From Vasilis Liaskovitis <vlias...@gmail.com>
Subject running multiple hive jobs from same directory
Date Thu, 28 Jan 2010 17:44:27 GMT
Hi,

I am trying to run mutliple hive jobs in parallel from the same
working directory. A lot of the jobs fail with the following:

  FAILED: Error in metadata: javax.jdo.JDOFatalDataStoreException:
Failed to start database 'metastore_db',
  see the next exception for details.
  NestedThrowables:
  java.sql.SQLException: Failed to start database 'metastore_db', see
the next exception for details.
  FAILED: Execution Error, return code 1 from
org.apache.hadoop.hive.ql.exec.DDLTask
  Command exited with non-zero status 9

My guess is that  multiple hive processes are trying to create or
lock/write to the metastore_db directory. Is this needed? Is there a
way to run multiple jobs from the same working directory? any help is
welcome.
thanks,

- Vasilis

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