Michael Nguyen created SPARK-13804:
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Summary: HiveThriftServer2 hangs intermittently
Key: SPARK-13804
URL: https://issues.apache.org/jira/browse/SPARK-13804
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.6.0
Reporter: Michael Nguyen
1. HiveThriftServer2 was started with startWithContext
2. Multiple temp tables were loaded and registered via registerTempTable .
3. HiveThriftServer2 was accessed via JDBC to access to those tables.
4. Some temp tables were dropped via
hiveContext.dropTempTable(registerTableName); and reloaded to refresh their
data. There are 1 to 7 million rows in these tables.
5. The same queries ran in step 3 were re-ran over the existing JDBC
connection. This time HiveThriftServer2 receives those queries but at times
HiveThriftServer2 hangs and does not return the results. CPU utilization on
both Spark driver and child nodes was around 1%. 1GB of RAM is used out of
30GB. So there was no resource starvation.
6. Wait about 5 minutes and rerun the same queries in step 5, and this time,
HiveThriftServer2 returns the results of those queries fine.
This issue occurs intermittently when the steps 1-5 are repeated, so it may
take several attempts to reproduce this issue.
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