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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/71045/
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Review request for hive, Jesús Camacho Rodríguez, Zoltan Haindrich, and Vineet 
Garg.


Bugs: HIVE-21948
    https://issues.apache.org/jira/browse/HIVE-21948


Repository: hive-git


Description
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Implement parallel processing in Pre Upgrade Tool
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Process databases and tables paralelly using a thread pool for each. Thread 
pools size can be defined by command line options. If no options are given the 
default pool size is the number of cpu cores / 2


Diffs
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upgrade-acid/pre-upgrade/src/main/java/org/apache/hadoop/hive/upgrade/acid/CloseableThreadLocal.java
 PRE-CREATION 
  
upgrade-acid/pre-upgrade/src/main/java/org/apache/hadoop/hive/upgrade/acid/CompactTablesState.java
 PRE-CREATION 
  
upgrade-acid/pre-upgrade/src/main/java/org/apache/hadoop/hive/upgrade/acid/CompactionMetaInfo.java
 PRE-CREATION 
  
upgrade-acid/pre-upgrade/src/main/java/org/apache/hadoop/hive/upgrade/acid/NamedForkJoinWorkerThreadFactory.java
 PRE-CREATION 
  
upgrade-acid/pre-upgrade/src/main/java/org/apache/hadoop/hive/upgrade/acid/PreUpgradeTool.java
 0a7354d12b 
  
upgrade-acid/pre-upgrade/src/main/java/org/apache/hadoop/hive/upgrade/acid/RunOptions.java
 66213d424c 
  
upgrade-acid/pre-upgrade/src/test/java/org/apache/hadoop/hive/upgrade/acid/TestCloseableThreadLocal.java
 PRE-CREATION 
  
upgrade-acid/pre-upgrade/src/test/java/org/apache/hadoop/hive/upgrade/acid/TestRunOptions.java
 PRE-CREATION 


Diff: https://reviews.apache.org/r/71045/diff/1/


Testing
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TestPreUpgradeTool UT passed.

Manually: 
1. deploy ambari and HDP 2.6.5 cluster.
2. create some hive tables and insert/update values
3. run PreUpgradeTool and check logs and output script


Thanks,

Krisztian Kasa

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