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[HIVE-21646] Tez: Prevent TezTasks from escaping thread logging context - Hive - [issue]
...If hive.exec.parallel is set to true to parallelize MoveTasks or StatsTasks, the Tez task does not benefit from a new thread and will lose all the thread context of the current query.Multipl...
http://issues.apache.org/jira/browse/HIVE-21646    Author: Gopal V , 2019-05-22, 00:08
[HIVE-21768] JDBC: Strip the default union prefix for un-enclosed UNION queries - Hive - [issue]
...beeline> select 1  union all select 2;+----------+| _u1._c0  |+----------+| 2        || 1        |+----------+The _u1 is superfluous and ...
http://issues.apache.org/jira/browse/HIVE-21768    Author: Gopal V , 2019-05-21, 23:10
[HIVE-21225] ACID: getAcidState() should cache a recursive dir listing locally - Hive - [issue]
...Currently getAcidState() makes 3 calls into the FS api which could be answered by making a single recursive listDir call and reusing the same data to check for isRawFormat() and isValidBase(...
http://issues.apache.org/jira/browse/HIVE-21225    Author: Gopal V , 2019-05-21, 22:53
[HIVE-21742] Vectorization: CASE result type casting - Hive - [issue]
...create temporary table foo(q548284 int);insert into foo values(1),(2),(3),(4),(5),(6);select q548284, CASE WHEN ((q548284 = 1)) THEN (0.2) WHEN ((q548284 = 2)) THEN (0.4) WHEN ((q548284 = 3)...
http://issues.apache.org/jira/browse/HIVE-21742    Author: Gopal V , 2019-05-16, 15:51
[ORC-500] PPD: StripeStatistics::getColumnStatistics() does not column prune - Orc - [issue]
...StripeStatistics::getColumnStatistics() will deserialize all column statistics, even if the ORC predicate push-down and the eventual SARG applies to a subset.This is affecting DATE push-down...
http://issues.apache.org/jira/browse/ORC-500    Author: Gopal V , 2019-05-16, 01:17
[HIVE-10915] ORC fails to read table with a 38Gb ORC file - Hive - [issue]
...hive>  set mapreduce.input.fileinputformat.split.maxsize=1000000000000;hive> set  mapreduce.input.fileinputformat.split.maxsize=1000000000000;hive> alter table lineitem co...
http://issues.apache.org/jira/browse/HIVE-10915    Author: Gopal V , 2019-05-10, 16:07
[HIVE-21344] CBO: Reduce compilation time in presence of materialized views - Hive - [issue]
...For every query, getAllValidMaterializedViews still requires a call to metastore to verify that the materializations exist, whether they are outdated or not, etc. Since this is only useful f...
http://issues.apache.org/jira/browse/HIVE-21344    Author: Gopal V , 2019-05-06, 17:05
[HIVE-21687] LLAP: LlapBaseInputFormat.getSplits(..., 0) should use LIMIT 0 query - Hive - [issue]
...The 0 split query is useful in ensuring that the user has access to the tables and getting the result schema.There's a fast-path for Tableau for "LIMIT 0" queries which can be used for this ...
http://issues.apache.org/jira/browse/HIVE-21687    Author: Gopal V , 2019-05-03, 06:03
[HIVE-18874] JDBC: HiveConnection shades log4j interfaces - Hive - [issue]
...This prevents Hive JDBC from being instantiated into a regular SLF4J logger env.java.lang.IncompatibleClassChangeError: Class org.apache.logging.slf4j.Log4jLoggerFactory does not implement t...
http://issues.apache.org/jira/browse/HIVE-18874    Author: Gopal V , 2019-05-02, 22:33
[HIVE-21400] Vectorization: LazyBinarySerializeWrite allocates Field() within the loop - Hive - [issue]
...GC thrash from an unexpected source in ReduceSinkOperator.org.apache.hadoop.hive.serde2.lazybinary.fast.LazyBinarySerializeWrite.resetWithoutOutput(LazyBinarySerializeWrite.java:136)  &...
http://issues.apache.org/jira/browse/HIVE-21400    Author: Gopal V , 2019-04-24, 22:37