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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-15530) Optimize the column stats update logic in table alteration
Date Tue, 03 Jan 2017 06:38:58 GMT


Hive QA commented on HIVE-15530:

Here are the results of testing the latest attachment:

{color:red}ERROR:{color} -1 due to no test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 9 failed/errored test(s), 10883 tests executed
*Failed tests:*
TestDerbyConnector - did not produce a TEST-*.xml file (likely timed out) (batchId=233)
TestMiniLlapLocalCliDriver - did not produce a TEST-*.xml file (likely timed out) (batchId=139)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[case_sensitivity] (batchId=61)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[input_testxpath] (batchId=28)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[udf_coalesce] (batchId=75)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[orc_ppd_basic] (batchId=134)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[orc_ppd_schema_evol_3a] (batchId=135)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainanalyze_2] (batchId=93)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainanalyze_5] (batchId=92)

Test results:
Console output:
Test logs:

Executing org.apache.hive.ptest.execution.TestCheckPhase
Executing org.apache.hive.ptest.execution.PrepPhase
Executing org.apache.hive.ptest.execution.ExecutionPhase
Executing org.apache.hive.ptest.execution.ReportingPhase
Tests exited with: TestsFailedException: 9 tests failed

This message is automatically generated.

ATTACHMENT ID: 12845326 - PreCommit-HIVE-Build

> Optimize the column stats update logic in table alteration
> ----------------------------------------------------------
>                 Key: HIVE-15530
>                 URL:
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive
>            Reporter: Yibing Shi
>            Assignee: Yibing Shi
>         Attachments: HIVE-15530.1.patch
> Currently when a table is altered, if any of below conditions is true, HMS would try
to update column statistics for the table:
> # database name is changed
> # table name is changed
> # old columns and new columns are not the same
> As a result, when a column is added to a table, Hive also tries to update column statistics,
which is not necessary. We can loose the last condition by checking whether all existing columns
are changed or not. If not, we don't have to update stats info.

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