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[HIVE-2284] bucketized map join should allow join key as a superset of bucketized columns - Hive - [issue]
...Currently bucketized mapjoin only allow the join keys being exactly the same as bucketized columns. This is too restrictive and is missing some optimization opportunities. If tables S and T ...
http://issues.apache.org/jira/browse/HIVE-2284    Author: Ning Zhang, 2011-12-16, 23:55
[HIVE-2144] reduce workload generated by JDBCStatsPublisher - Hive - [issue]
...In JDBCStatsPublisher, we first try a SELECT query to see if the specific ID was inserted by another task (mostly likely a speculative or previously failed task). Depending on if the ID is t...
http://issues.apache.org/jira/browse/HIVE-2144    Author: Ning Zhang, 2011-12-16, 23:55
[HIVE-2431] upgrading thrift version didn't upgrade libthrift.jar symlink correctly - Hive - [issue]
...libthrift.jar and libfb303.jar are symlinks to the current thrift version. With the upgrade to 0.7, there's a bug in the symlink creation....
http://issues.apache.org/jira/browse/HIVE-2431    Author: Ning Zhang, 2011-12-16, 23:55
[HIVE-2061] Create a hive_contrib.jar symlink to hive-contrib-{version}.jar for backward compatibility - Hive - [issue]
...We have seen a use case where in the user's script, it run 'add jar hive_contrib.jar'. Since Hive has moved the jar file to be hive-contrib-{version}.jar, it introduced backward incompatibil...
http://issues.apache.org/jira/browse/HIVE-2061    Author: Ning Zhang, 2011-12-16, 23:55
[HIVE-2106] Increase the number of operator counter - Hive - [issue]
...Currently Hadoop counters have to be defined as enum (hardcoded) and we support up to 400 counters now. This limit the number of operators to 100 (each operator has 4 counters). We need to i...
http://issues.apache.org/jira/browse/HIVE-2106    Author: Ning Zhang, 2011-12-16, 23:55
[HIVE-2164] comments are not handled correctly - Hive - [issue]
...One example ishive> – comments;FAILED: Parse Error: line 0:-1 cannot recognize input '<EOF>'Also we need to handle comments correctly in all unit tests (.q files)....
http://issues.apache.org/jira/browse/HIVE-2164    Author: Ning Zhang, 2011-11-15, 09:47
[HIVE-2324] Enhancing local mode execution with non-HDFS related queries - Hive - [issue]
...Local mode execution are decided based on the input size. There are queries that do not involve data resides in HDFS at all. We should enhance local mode execution with these types of querie...
http://issues.apache.org/jira/browse/HIVE-2324    Author: Ning Zhang, 2011-07-29, 18:50
[HIVE-2212] unit test to compare results of getInputSummary() with single thread and multiple threads - Hive - [issue]
http://issues.apache.org/jira/browse/HIVE-2212    Author: Ning Zhang, 2011-06-09, 22:02
[HIVE-2193] drop partition with partial specification should remove the HDFS directory corresponding to the root of PS - Hive - [issue]
...If a table have multiple partitions, say (ds, hr), currently the following command: alter table T drop partition(ds='1');won't delete the directory .../T/ds=1, although all subdirectori...
http://issues.apache.org/jira/browse/HIVE-2193    Author: Ning Zhang, 2011-06-03, 18:47
Re: questions about statistics in 0.7 - Hive - [mail # user]
...On May 26, 2011, at 1:28 PM, Guy Bayes wrote:  Crap sorry hit send too early  questions 1: Job overhead of generating statistics on the fly with  set hive.stats.autogather=tru...
   Author: Ning Zhang, 2011-05-26, 22:21
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