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[HIVE-10323] Tez merge join operator does not honor hive.join.emit.interval - Hive - [issue]
...This affects efficiency in case of skews....
http://issues.apache.org/jira/browse/HIVE-10323    Author: Vikram Dixit K, 2015-04-18, 03:30
[HIVE-10273] Union with partition tables which have no data fails with NPE - Hive - [issue]
...As shown in the test case in the patch below, when we have partitioned tables which have no data, we fail with an NPE with the following stack trace:NullPointerException nulljava.lang.NullPo...
http://issues.apache.org/jira/browse/HIVE-10273    Author: Vikram Dixit K, 2015-04-18, 00:41
[HIVE-10233] Hive on LLAP: Memory manager - Hive - [issue]
...We need a memory manager in llap/tez to manage the usage of memory across threads....
http://issues.apache.org/jira/browse/HIVE-10233    Author: Vikram Dixit K, 2015-04-15, 22:22
[HIVE-10232] Map join in tez needs to account for memory limits due to other map join operators possible in the same work - Hive - [issue]
...There seems to be a regression with respect to MR in terms of allowing multiple map joins in the same task by not accounting for the memory consumed in each of the joins....
http://issues.apache.org/jira/browse/HIVE-10232    Author: Vikram Dixit K, 2015-04-08, 02:35
[HIVE-9832] Merge join followed by union and a map join in hive on tez fails. - Hive - [issue]
...select a.key, b.value from (select x.key as key, y.value as value fromsrcpart x join srcpart y on (x.key = y.key)union allselect key, value from srcpart z) a join src b on (a.value = b.value...
http://issues.apache.org/jira/browse/HIVE-9832    Author: Vikram Dixit K, 2015-04-07, 01:10
[HIVE-9836] Hive on tez: fails when virtual columns are present in the join conditions (for e.g. partition columns) - Hive - [issue]
...explainselect a.key, a.value, b.valuefrom tab a join tab_part b on a.key = b.key and a.ds = b.ds;fails....
http://issues.apache.org/jira/browse/HIVE-9836    Author: Vikram Dixit K, 2015-04-07, 01:10
[HIVE-10201] Hive LLAP needs refactoring of the configuration class - Hive - [issue]
...In order for the client to take decisions regarding resource requirement and availability, we need to move the configuration class to llap-client. In the future, we will need to get the conf...
http://issues.apache.org/jira/browse/HIVE-10201    Author: Vikram Dixit K, 2015-04-02, 21:39
[HIVE-10001] SMB join in reduce side - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-10001    Author: Vikram Dixit K, 2015-04-01, 22:46
[HIVE-9687] Blink DB style approximate querying in hive - Hive - [issue]
...http://www.cs.berkeley.edu/~sameerag/blinkdb_eurosys13.pdfThere are various pieces here that need to be thought through and implemented. For e.g. sampling offline, run-time sampling selectio...
http://issues.apache.org/jira/browse/HIVE-9687    Author: Vikram Dixit K, 2015-03-27, 01:48
[HIVE-9886] Hive on tez: NPE when converting join to SMB in sub-query - Hive - [issue]
...set hive.auto.convert.sortmerge.join = true;create table t1(id string,od string);create table t2(id string,od string);select vt1.id from(select rt1.id from(select t1.id, row_number() over (p...
http://issues.apache.org/jira/browse/HIVE-9886    Author: Vikram Dixit K, 2015-03-19, 19:33
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB