Amareshwari Sriramadasu created LENS-1456:
---------------------------------------------
Summary: Deadlock in jdbcdriver
Key: LENS-1456
URL: https://issues.apache.org/jira/browse/LENS-1456
Project: Apache Lens
Issue Type: Bug
Components: driver-jdbc
Reporter: Amareshwari Sriramadasu
Here are the details :
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Found one Java-level deadlock:
=============================
"lens-driver-jdbc-795":
waiting to lock monitor 0x00007f98200140a8 (object 0x0000000319a3dc88, a
org.apache.lens.server.api.query.QueryContext),
which is held by "query-cancellation-pool-Thread-3"
"query-cancellation-pool-Thread-3":
waiting to lock monitor 0x00007f97ec002d08 (object 0x0000000319a8c6e0, a
java.util.ArrayList),
which is held by "lens-driver-jdbc-795"
Java stack information for the threads listed above:
===================================================
"lens-driver-jdbc-795":
at
org.apache.lens.server.query.QueryExecutionServiceImpl.updateStatus(QueryExecutionServiceImpl.java:1049)
- waiting to lock <0x0000000319a3dc88> (a
org.apache.lens.server.api.query.QueryContext)
at
org.apache.lens.server.query.QueryExecutionServiceImpl.access$1900(QueryExecutionServiceImpl.java:110)
at
org.apache.lens.server.query.QueryExecutionServiceImpl$AsyncStatusUpdater.onDriverStatusUpdated(QueryExecutionServiceImpl.java:853)
at
org.apache.lens.server.api.query.QueryContext.setDriverStatus(QueryContext.java:577)
- locked <0x0000000319a8c6e0> (a java.util.ArrayList)
at
org.apache.lens.driver.jdbc.JDBCDriver$QueryCallable.call(JDBCDriver.java:299)
at
org.apache.lens.driver.jdbc.JDBCDriver$QueryCallable.call(JDBCDriver.java:237)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
"query-cancellation-pool-Thread-3":
at
org.apache.lens.server.api.query.QueryContext.setDriverStatus(QueryContext.java:575)
- waiting to lock <0x0000000319a8c6e0> (a java.util.ArrayList)
at
org.apache.lens.server.api.query.QueryContext.setDriverStatus(QueryContext.java:587)
at
org.apache.lens.driver.jdbc.JDBCDriver.cancelQuery(JDBCDriver.java:962)
at
org.apache.lens.server.query.QueryExecutionServiceImpl.cancelQuery(QueryExecutionServiceImpl.java:2720)
- locked <0x0000000319a3dc88> (a
org.apache.lens.server.api.query.QueryContext)
at
org.apache.lens.server.query.QueryExecutionServiceImpl.access$3500(QueryExecutionServiceImpl.java:110)
at
org.apache.lens.server.query.QueryExecutionServiceImpl$CancelQueryTask.run(QueryExecutionServiceImpl.java:1667)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
Found 1 deadlock.
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