Gopal V created HIVE-18886:
------------------------------
Summary: ACID: NPE on unexplained mysql exceptions
Key: HIVE-18886
URL: https://issues.apache.org/jira/browse/HIVE-18886
Project: Hive
Issue Type: Bug
Components: Transactions
Reporter: Gopal V
At 200+ sessions on a single HS2, the DbLock impl fails to propagate mysql
exceptions
{code}
2018-03-06T22:55:16,197 ERROR [HiveServer2-Background-Pool: Thread-12867]:
ql.Driver (:()) - FAILED: Error in acquiring locks: null
java.lang.NullPointerException
at
org.apache.hadoop.hive.metastore.DatabaseProduct.isDeadlock(DatabaseProduct.java:56)
at
org.apache.hadoop.hive.metastore.txn.TxnHandler.checkRetryable(TxnHandler.java:2459)
at
org.apache.hadoop.hive.metastore.txn.TxnHandler.getOpenTxns(TxnHandler.java:499)
{code}
{code}
return e instanceof SQLTransactionRollbackException
|| ((dbProduct == MYSQL || dbProduct == POSTGRES || dbProduct ==
SQLSERVER)
&& e.getSQLState().equals("40001"))
|| (dbProduct == POSTGRES && e.getSQLState().equals("40P01"))
|| (dbProduct == ORACLE && (e.getMessage().contains("deadlock detected")
|| e.getMessage().contains("can't serialize access for this
transaction")));
{code}
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