zuotingbing created SPARK-22793:
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Summary: Memory leak in Spark Thrift Server
Key: SPARK-22793
URL: https://issues.apache.org/jira/browse/SPARK-22793
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.0.2
Reporter: zuotingbing
Priority: Critical
1. Start HiveThriftServer2
2. Connect to thriftserver through beeline
3. Close the beeline
4. repeat step2 and step 3 for several times
we found there are many directories never be dropped under the path
{code:java}
hive.exec.local.scratchdir
{code} and
{code:java}
hive.exec.scratchdir
{code} , as we know the scratchdir is added to deleteOnExit when it be created.
So it means that the cache size of FileSystem deleteOnExit will keep increasing
until JVM terminated.
In addition, we use
{code:java}
jmap -histo:live [PID]
{code} to printout the size of objects in HiveThriftServer2 Process, we can
find the object "org.apache.spark.sql.hive.client.HiveClientImpl" and
"org.apache.hadoop.hive.ql.session.SessionState" keep increasing even though we
closed all the beeline connections, which caused the leak of Memory.
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