Andrew Tindle created HIVE-4043:
-----------------------------------
Summary: Parallel Hive Queries: Sporadic Errors of form: Error in
metadata: javax.jdo.JDOFatalDataStoreException: IO Error: Connection reset
Key: HIVE-4043
URL: https://issues.apache.org/jira/browse/HIVE-4043
Project: Hive
Issue Type: Bug
Components: Metastore
Affects Versions: 0.9.0
Environment: O/S: RHEL 6.3
Metastore: Oracle 11gR2
Reporter: Andrew Tindle
I have a program that spawns Hive queries/processes, up to a maximum of 5, in
parallel. When the number of queries drops below. ie the process has ended,
another Hive query/process is initiated.
Sometimes, this program works, i.e. all 34 queries successfully process.
However, on other occasions, I get sporadic instances of the following error
for some of the queries:
FAILED: Error in metadata: javax.jdo.JDOFatalDataStoreException: IO Error:
Connection reset
NestedThrowables:
java.sql.SQLRecoverableException: IO Error: Connection reset
FAILED: Execution Error, return code 1 from
org.apache.hadoop.hive.ql.exec.DDLTask
Can anyone help in identifying/resolving why this occurs. It looks to me as if
there is some kind of race condition/collision with the Hive Metastore, this
being hosted in an Oracle DB on the same node as the Hadoop infrastructure
(single node).
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
