Hi Is there any way to speed up the Hive Order by With Limit Query in any way? suppose the base table contains 1Km (1,000,000,000) rows and now perform the query Select * from Table t order by t.order_num Limit 10000; no table and query modification allowed since the real query are much complicated in the Select part and a pre-sorted/Orc Partitioned tables does not helps much. since all rows goes to the same reducer to get the correct order, it greatly impacted the performance of the Hive on Tez performance. And we are in an POC to show off The power of Hive on Tez but got stuck in this order by query. Thank you very much in advance ... View more

Just Wondering if anyone could provide a deep dive on current Apache Storm 1.x's ? there is nowhere to find a good explaination on those topics. Much Appreciated in advance . ... View more

cloudbreak deployer with openstack: when create cluster, error "org.openstack4j.api.exceptions.ConnectionException: java.net.UnknownHostException". My cloud is using version openstack kilo, which is distributed by 2 physical servers, cloudbreak deployer version is 1.2.1, when deployer is started, associating it with a floating-ip, and then ssh it, excute cbd init and cbd start commands, then successfully access and login in to http://deployer-floating-ip:3000 via browser, then I create credential、network and so on, and then I create a cluster with a bluepoint, but deployer reports and error "org.openstack4j.api.exceptions.ConnectionException: java.net.UnknownHostException: controller". When I create credential, I cannot use keystone v2, I have to use key stone v3, because keystone only support v3。 ... View more