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[HIVE-7396] BucketingSortingReduceSinkOptimizer throws NullPointException during ETL - Hive - [issue]
...When a bucketed insert is performed from a partitioned table into a new table2014-07-11 22:11:30,176 ERROR [main]: ql.Driver (SessionState.java:printError(660)) - FAILED: NullPointerExceptio...
http://issues.apache.org/jira/browse/HIVE-7396    Author: Gopal V, 2014-08-10, 02:36
Re: Tuning Triangle Joins on Hive - Hive - [mail # user]
...On 7/31/14, 12:28 PM, Firas Abuzaid wrote:This is an interesting use-case for a JOIN clause.The main overhead is that the JOIN criteria is materializing JOINs onto HDFS.Neither hive indexes,...
   Author: Gopal V, 2014-08-06, 21:03
[HIVE-6320] Row-based ORC reader with PPD turned on dies on BufferUnderFlowException/IndexOutOfBoundsException - Hive - [issue]
...ORC data reader crashes out on a BufferUnderflowException, while trying to read data row-by-row with the predicate push-down enabled on current trunk.Stack trace:Caused by: java.nio.BufferUn...
http://issues.apache.org/jira/browse/HIVE-6320    Author: Gopal V, 2014-08-02, 00:59
[HIVE-6993] Update hive for Tez VertexLocationHint and getAVailableResource API changes - Hive - [issue]
...Tez had two breaking changes in API between 0.4.x -> 0.5.x.context.getTotalAvailableResource().getMemory(); and context.scheduleVertexTasks(List< TaskWithLocationHint>);...
http://issues.apache.org/jira/browse/HIVE-6993    Author: Gopal V, 2014-08-01, 23:12
[HIVE-7156] Group-By operator stat-annotation only uses distinct approx to generate rollups - Hive - [issue]
...The stats annotation for a group-by only annotates the reduce-side row-count with the distinct values.The map-side gets the row-count as the rows output instead of distinct * parallelism, wh...
http://issues.apache.org/jira/browse/HIVE-7156    Author: Gopal V, 2014-08-01, 03:54
[HIVE-6786] Off by one error in ORC PPD - Hive - [issue]
...Turning on ORC PPD makes split computation fail for a 10Tb benchmark.Narrowed down to the following code fragmenthttps://github.com/apache/hive/blob/branch-0.13/ql/src/java/org/apache/hadoop...
http://issues.apache.org/jira/browse/HIVE-6786    Author: Gopal V, 2014-07-31, 19:42
[HIVE-7266] Optimized HashTable with vectorized map-joins results in String columns extending - Hive - [issue]
...The following query returns different results when both vectorized mapjoin and the new optimized hashtable are enabled.hive> set hive.vectorized.execution.enabled=false;hive> select s_...
http://issues.apache.org/jira/browse/HIVE-7266    Author: Gopal V, 2014-07-24, 23:50
[HIVE-7397] Set the default threshold for fetch task conversion to 1Gb - Hive - [issue]
...Currently, modifying the value of hive.fetch.task.conversion to "more" results in a dangerous setting where small scale queries function, but large scale queries crash.This occurs because th...
http://issues.apache.org/jira/browse/HIVE-7397    Author: Gopal V, 2014-07-23, 20:11
[HIVE-7428] OrcSplit fails to account for columnar projections in its size estimates - Hive - [issue]
...Currently, ORC generates splits based on stripe offset + stripe length.This means that the splits for all columnar projections are exactly the same size, despite reading the footer which giv...
http://issues.apache.org/jira/browse/HIVE-7428    Author: Gopal V, 2014-07-16, 18:44
[HIVE-7402] add `approx_distinct` & composable nDV UDAFs - Hive - [issue]
...Build composable approximate distinct UDAFs into hive.This is useful for approximate queries, particularly for collapsing partial nDV values whenever a partition is added.hive> select app...
http://issues.apache.org/jira/browse/HIVE-7402    Author: Gopal V, 2014-07-14, 22:34
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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