Deepesh Khandelwal created HIVE-11902:
-----------------------------------------
Summary: Abort txn cleanup thread throws SyntaxErrorException
Key: HIVE-11902
URL: https://issues.apache.org/jira/browse/HIVE-11902
Project: Hive
Issue Type: Bug
Components: Transactions
Reporter: Deepesh Khandelwal
Assignee: Deepesh Khandelwal
When cleaning left over transactions we see the DeadTxnReaper code threw the
following exception:
{noformat}
2015-09-21 05:23:38,148 WARN [DeadTxnReaper-0]: txn.TxnHandler
(TxnHandler.java:performTimeOuts(1876)) - Aborting timedout transactions failed
due to You have an error in your SQL syntax; check the manual that corresponds
to your MySQL server version for the right syntax to use near ')' at line
1(SQLState=42000,ErrorCode=1064)
com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in
your SQL syntax; check the manual that corresponds to your MySQL server version
for the right syntax to use near ')' at line 1
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)
at com.mysql.jdbc.Util.getInstance(Util.java:360)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:978)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3887)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3823)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2435)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2582)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2526)
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1618)
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1549)
at
com.jolbox.bonecp.StatementHandle.executeUpdate(StatementHandle.java:497)
at
org.apache.hadoop.hive.metastore.txn.TxnHandler.abortTxns(TxnHandler.java:1275)
at
org.apache.hadoop.hive.metastore.txn.TxnHandler.performTimeOuts(TxnHandler.java:1866)
at
org.apache.hadoop.hive.ql.txn.AcidHouseKeeperService$TimedoutTxnReaper.run(AcidHouseKeeperService.java:87)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
{noformat}
The problem here is that the method {{abortTxns(Connection dbConn, List<Long>
txnids)}} in
metastore/src/java/org/apache/hadoop/hive/metastore/txn/TxnHandler.java creates
the following bad query when txnids list is empty.
{code}
delete from HIVE_LOCKS where hl_txnid in ();
{code}
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