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[HIVE-20621] GetOperationStatus called in resultset.next causing incremental slowness - Hive - [issue]
...Fetching result set for a result cache hit query gets slower as more rows are fetched. For fetching 10 row result set it took about 900ms but fetching 200 row result set took 8 seconds. Reas...
http://issues.apache.org/jira/browse/HIVE-20621    Author: Prasanth Jayachandran , 2018-09-23, 08:25
[HIVE-18628] Make tez dag status check interval configurable - Hive - [issue]
...DAG status check interval in TezJobMonitor is not configurable. This can cause cached data to be returned and fail some trigger validation tests....
http://issues.apache.org/jira/browse/HIVE-18628    Author: Prasanth Jayachandran , 2018-09-23, 07:57
[HIVE-5949] In statistics annotation add flag to say if statistics is estimated or accurate - Hive - [issue]
...HIVE-5921 estimates the basic statistics (row count/data size) if its not available in metastore. It will be better to have a flag which says if the statistics is estimated value or accurate...
http://issues.apache.org/jira/browse/HIVE-5949    Author: Prasanth Jayachandran , 2018-09-20, 08:59
[HIVE-20583] Use canonical hostname only for kerberos auth in HiveConnection - Hive - [issue]
...HiveConnection uses canonical hostnames which is a requirement only for kerberos clusters (specifically on clusters that has reverse DNS resolution disabled). Use canonical hostnames only wh...
http://issues.apache.org/jira/browse/HIVE-20583    Author: Prasanth Jayachandran , 2018-09-20, 05:36
[HIVE-18952] Tez session disconnect and reconnect on HS2 HA failover - Hive - [issue]
...Now that TEZ-3892 is committed, HIVE-18281 can make use of tez session disconnect and reconnect on HA failover....
http://issues.apache.org/jira/browse/HIVE-18952    Author: Prasanth Jayachandran , 2018-09-20, 01:20
[HIVE-20582] Make hflush in hive proto logging configurable - Hive - [issue]
...Hive proto logging does hflush to avoid small files issue in hdfs. This may not be ideal for blobstorage where hflush gets applied only on closing of the file. Make hflush configurable so th...
http://issues.apache.org/jira/browse/HIVE-20582    Author: Prasanth Jayachandran , 2018-09-18, 20:23
Hive Compaction OOM - Hive - [mail # user]
...Hi ShawnYou might be running into issues related to huge protobuf objects from huge string columns. Without https://issues.apache.org/jira/plugins/servlet/mobile#issue/ORC-203 there isn’t an...
   Author: Prasanth Jayachandran , 2018-09-17, 16:27
[HIVE-20202] Add profiler endpoint to HS2 and LLAP - Hive - [issue]
...Add a web endpoint for profiling based on async-profiler. This servlet should be added to httpserver so that HS2 and LLAP daemons can output flamegraphs when their /prof endpoint is hit. Sin...
http://issues.apache.org/jira/browse/HIVE-20202    Author: Prasanth Jayachandran , 2018-09-16, 07:12
[HIVE-20428] HiveStreamingConnection should use addPartition if not exists API - Hive - [issue]
...https://github.com/apache/hive/blob/f280361374c6219d8734d5972c740d6d6c3fb7ef/streaming/src/java/org/apache/hive/streaming/HiveStreamingConnection.java#L379-L381 catches AlreadyExistsExceptio...
http://issues.apache.org/jira/browse/HIVE-20428    Author: Prasanth Jayachandran , 2018-08-20, 22:41
[HIVE-19886] Logs may be directed to 2 files if --hiveconf hive.log.file is used - Hive - [issue]
...hive launch script explicitly specific log4j2 configuration file to use. The main() methods in HiveServer2 and HiveMetastore reconfigures the logger based on user input via --hiveconf hive.l...
http://issues.apache.org/jira/browse/HIVE-19886    Author: Prasanth Jayachandran , 2018-08-10, 22:08