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[HIVE-1852] Reduce unnecessary DFSClient.rename() calls - Hive - [issue]
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...In Hive client side (MoveTask etc), DFSCleint.rename() is called for every file inside a directory. It is very expensive for a large directory in a busy DFS namenode. We should replace it wi...
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http://issues.apache.org/jira/browse/HIVE-1852
Author: Ning Zhang,
2011-12-16, 23:59
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[HIVE-1713] duplicated MapRedTask in Multi-table inserts mixed with FileSinkOperator and ReduceSinkOperator - Hive - [issue]
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...A multi-table insert with FileSinkOperator and ReduceSinkOperator have the same MapRedTask added to the rootTask twice. This results in failed execution or wrong results....
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http://issues.apache.org/jira/browse/HIVE-1713
Author: Ning Zhang,
2011-12-16, 23:59
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[HIVE-1639] ExecDriver.addInputPaths() error if partition name contains a comma - Hive - [issue]
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...The ExecDriver.addInputPaths() calls FileInputFormat.addPaths(), which takes a comma-separated string representing a set of paths. If the path name of a input file contains a comma, this cod...
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http://issues.apache.org/jira/browse/HIVE-1639
Author: Ning Zhang,
2011-12-16, 23:59
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[HIVE-1674] count(*) returns wrong result when a mapper returns empty results - Hive - [issue]
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...select count from src where false; will return # of mappers rather than 0....
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http://issues.apache.org/jira/browse/HIVE-1674
Author: Ning Zhang,
2011-12-16, 23:59
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[HIVE-1961] Make Stats gathering more flexible with timeout and atomicity - Hive - [issue]
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...The JDBC-type stats publisher and and aggregator use a hard-coded timeout value. We should make it configurable. Also we should introduce a hive variable to allow atomic stats gathering (met...
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http://issues.apache.org/jira/browse/HIVE-1961
Author: Ning Zhang,
2011-12-16, 23:59
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[HIVE-936] dynamic partitions creation based on values - Hive - [issue]
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...If a Hive table is created as partitioned, DML could only inserted into one partitioin per query. Ideally partitions should be created on the fly based on the value of the partition columns....
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http://issues.apache.org/jira/browse/HIVE-936
Author: Ning Zhang,
2011-12-16, 23:59
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[HIVE-1416] Dynamic partition inserts left empty files uncleaned in hadoop 0.17 local mode - Hive - [issue]
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...Hive parses the file name generated by tasks to figure out the task ID in order to generate files for empty buckets. Different hadoop versions and execution mode have different ways of namin...
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http://issues.apache.org/jira/browse/HIVE-1416
Author: Ning Zhang,
2011-12-16, 23:59
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[HIVE-1962] make a libthrift.jar and libfb303.jar in dist package for backward compatibility - Hive - [issue]
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...We have seen an internal user that relies on Hive's distribution library libthrift.jar. After the upgrade of thrift jar to 0.5.0, the jar file is renamed to thrift-0.5.0.jar and similarly fo...
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http://issues.apache.org/jira/browse/HIVE-1962
Author: Ning Zhang,
2011-12-16, 23:59
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[HIVE-1806] The merge criteria on dynamic partitons should be per partiton - Hive - [issue]
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...Currently the criteria of whether a merge job should be fired on dynamic generated partitions are is the average file size of files across all dynamic partitions. It is very common that some...
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http://issues.apache.org/jira/browse/HIVE-1806
Author: Ning Zhang,
2011-12-16, 23:59
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[HIVE-1471] CTAS should unescape the column name in the select-clause. - Hive - [issue]
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...The following query {create table T as select `to` from S;}failed since `to` should be unescaped before creating the table....
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http://issues.apache.org/jira/browse/HIVE-1471
Author: Ning Zhang,
2011-12-16, 23:59
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