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[HIVE-9645] Constant folding case NULL equality - Hive - [issue]
...Hive logical optimizer does not follow the Null scan codepath when encountering a NULL = 1;NULL = 1 is not evaluated as false in the constant propogation implementation.hive> explain sele...
http://issues.apache.org/jira/browse/HIVE-9645    Author: Gopal V, 2015-04-25, 10:05
[HIVE-10217] LLAP: Support caching of uncompressed ORC data - Hive - [issue]
...Caused by: java.io.IOException: ORC compression buffer size (0) is smaller than LLAP low-level cache minimum allocation size (131072). Decrease the value for hive.llap.io.cache.orc.alloc.min...
http://issues.apache.org/jira/browse/HIVE-10217    Author: Gopal V, 2015-04-25, 04:16
[HIVE-10190] CBO: AST mode checks for TABLESAMPLE with AST.toString().contains("TOK_TABLESPLITSAMPLE") - Hive - [issue]
...public static boolean validateASTForUnsupportedTokens(ASTNode ast) {    String astTree = ast.toStringTree();    // if any of following tokens are present in AST...
http://issues.apache.org/jira/browse/HIVE-10190    Author: Gopal V, 2015-04-24, 20:36
[HIVE-10451]  PTF deserializer fails if values are not used in reducer - Hive - [issue]
...In this particular case no values are needed from reducer to complete processing....
http://issues.apache.org/jira/browse/HIVE-10451    Author: Gopal V, 2015-04-24, 10:21
[HIVE-10466] LLAP: fix container sizing configuration for memory - Hive - [issue]
...We cannot use full machine for LLAP due to config for cache and executors being "split brain"... please refer to  Gopal V for details...
http://issues.apache.org/jira/browse/HIVE-10466    Author: Gopal V, 2015-04-23, 22:00
[HIVE-9711] ORC Vectorization DoubleColumnVector.isRepeating=false if all entries are NaN - Hive - [issue]
...The isRepeating=true check uses Java equality, which results in NaN != NaN comparison operations.The noNulls case needs the current check folded into the previous loop, while the hasNulls ca...
http://issues.apache.org/jira/browse/HIVE-9711    Author: Gopal V, 2015-04-23, 00:01
[HIVE-10191] ORC: Cleanup writer per-row synchronization - Hive - [issue]
...ORC writers were originally meant to be thread-safe, but in the present day implementation each ORC writer is entirely share-nothing which converts most of the synchronized blocks in ORC as ...
http://issues.apache.org/jira/browse/HIVE-10191    Author: Gopal V, 2015-04-21, 17:10
[HIVE-10173] ThreadLocal synchronized initialvalue() is irrelevant in JDK7 - Hive - [issue]
...The threadlocals need not synchronize the calls to initialvalue(), since that is effectively going to be called once per-thread in JDK7.The anti-pattern lives on due to a very old JDK bug - ...
http://issues.apache.org/jira/browse/HIVE-10173    Author: Gopal V, 2015-04-20, 07:18
[HIVE-10121] Implement a hive --service udflint command to check UDF jars for common shading mistakes - Hive - [issue]
...Several SerDe and UDF jars tend to shade in various parts of the dependencies including hadoop-common or guava without relocation.Implement a simple udflint tool which automates some part of...
http://issues.apache.org/jira/browse/HIVE-10121    Author: Gopal V, 2015-04-16, 15:17
[HIVE-10334] LLAP: Self-joins with the cache enabled - Hive - [issue]
...Looks like reading the same split from 2 tasks in the same process might have some corner cases.hive> select count(1) from tpch_orc_snappy_1000.region y join tpch_orc_snappy_1000.region x...
http://issues.apache.org/jira/browse/HIVE-10334    Author: Gopal V, 2015-04-15, 02:35
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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