We suspect a Hive table CBO statistics is incorrect. How can we check it and how to re-compute them, should we run the commands again? analyze table t compute statistics; analyze table t compute statistics for columns; ... View more

Client is unhappy about "Hive on Spark" is not supported yet. It is a more Hive feature than Spark's: https://cwiki.apache.org/confluence/display/Hive/Hive+on+Spark What is our stand here? Do we know when it is going to be available? ... View more

Ambari 1.7, after decommissioning nodes (delete host), we see new version of conf created to HDFS, Yarn, HBase, Hive... but they are identical to previous conf. Is it a known issue? can we make the previous version as current to avoid "restart required labels"? ... View more

Cannot bring up 2 NodeMangers, the other 19 works fine. I got this: FATAL nodemanager.NodeManager (NodeManager.java:initAndStartNodeManager(465)) - Error starting NodeManager java.lang.UnsatisfiedLinkError: Could not load library. Reasons: [no leveldbjni64-1.8 in java.library.path, no leveldbjni-1.8 in java.library.path, no leveldbjni in java.library.path, Permission denied] It is not caused by "chmod 777 /tmp", any clue? ... View more