Thanks Sanjiv.
Unfortunately after resetting hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager and doing <property> <name>hive.in.test</name> <value>true</value> </property> Still getting the same error message hive> show databases; FAILED: LockException [Error 10280]: Error communicating with the metastore Mich Talebzadeh http://talebzadehmich.wordpress.com Publications due shortly: Creating in-memory Data Grid for Trading Systems with Oracle TimesTen and Coherence Cache NOTE: The information in this email is proprietary and confidential. This message is for the designated recipient only, if you are not the intended recipient, you should destroy it immediately. Any information in this message shall not be understood as given or endorsed by Peridale Ltd, its subsidiaries or their employees, unless expressly so stated. It is the responsibility of the recipient to ensure that this email is virus free, therefore neither Peridale Ltd, its subsidiaries nor their employees accept any responsibility. From: @Sanjiv Singh [mailto:sanjiv.is...@gmail.com] Sent: 06 April 2015 15:21 To: user@hive.apache.org Subject: Re: Concurrency issue, Setting hive.txn.manager to "org.apache.hadoop.hive.ql.lockmgr.DbTxnManager" Not sure ..It should work Try adding below configuration and then check.. <property> <name>hive.in.test</name> <value>true</value> </property> Regards Sanjiv Singh Mob : +091 9990-447-339 On Mon, Apr 6, 2015 at 7:21 PM, Mich Talebzadeh <m...@peridale.co.uk> wrote: Hi, I turned on concurrency for hive for DML with settings in hive-site.xml as follows: hive.support.concurrency=true hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager hive.compactor.initiator.on=true hive.compactor.worker.threads=2 hive.support.concurrency=true hive.enforce.bucketing=true hive.exec.dynamic.partition.mode=nonstrict Recycled connection to metastore and started hive server. Tried to query hive as follows: hive> use asehadoop; FAILED: LockException [Error 10280]: Error communicating with the metastore Went back and set hive.txn.manager to default hive.txn.manager= org.apache.hadoop.hive.ql.lockmgr.DummyTxnManager and recycled again and all worked! Sounds like concurrency does not work or something extra I need to do? Thanks Mich Talebzadeh http://talebzadehmich.wordpress.com Publications due shortly: Creating in-memory Data Grid for Trading Systems with Oracle TimesTen and Coherence Cache NOTE: The information in this email is proprietary and confidential. This message is for the designated recipient only, if you are not the intended recipient, you should destroy it immediately. Any information in this message shall not be understood as given or endorsed by Peridale Ltd, its subsidiaries or their employees, unless expressly so stated. It is the responsibility of the recipient to ensure that this email is virus free, therefore neither Peridale Ltd, its subsidiaries nor their employees accept any responsibility.
