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From "Hive QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-17466) Metastore API to list unique partition-key-value combinations
Date Sat, 09 Sep 2017 02:53:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-17466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16159686#comment-16159686
] 

Hive QA commented on HIVE-17466:
--------------------------------



Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12886133/HIVE-17466.2-branch-2.patch

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

{color:red}ERROR:{color} -1 due to 10 failed/errored test(s), 10603 tests executed
*Failed tests:*
{noformat}
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[comments] (batchId=35)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[explaindenpendencydiffengs] (batchId=38)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[llap_smb] (batchId=142)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[orc_ppd_basic] (batchId=139)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[vector_if_expr] (batchId=144)
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver[explaindenpendencydiffengs] (batchId=115)
org.apache.hadoop.hive.cli.TestSparkCliDriver.testCliDriver[vectorized_ptf] (batchId=125)
org.apache.hadoop.hive.ql.security.TestExtendedAcls.testPartition (batchId=228)
org.apache.hadoop.hive.ql.security.TestFolderPermissions.testPartition (batchId=217)
org.apache.hive.hcatalog.api.TestHCatClient.testTransportFailure (batchId=176)
{noformat}

Test results: https://builds.apache.org/job/PreCommit-HIVE-Build/6739/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/6739/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-6739/

Messages:
{noformat}
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: 10 tests failed
{noformat}

This message is automatically generated.

ATTACHMENT ID: 12886133 - PreCommit-HIVE-Build

> Metastore API to list unique partition-key-value combinations
> -------------------------------------------------------------
>
>                 Key: HIVE-17466
>                 URL: https://issues.apache.org/jira/browse/HIVE-17466
>             Project: Hive
>          Issue Type: New Feature
>          Components: Metastore
>    Affects Versions: 2.2.0, 3.0.0
>            Reporter: Mithun Radhakrishnan
>            Assignee: Thiruvel Thirumoolan
>         Attachments: HIVE-17466.1.patch, HIVE-17466.2-branch-2.patch, HIVE-17466.2.patch
>
>
> Raising this on behalf of [~thiruvel], who wrote this initially as part of a tangential
"data-discovery" system.
> Programs like Apache Oozie, Apache Falcon (or Yahoo GDM), etc. launch workflows based
on the availability of table/partitions. Partitions are currently discovered by listing partitions
using (what boils down to) {{HiveMetaStoreClient.listPartitions()}}. This can be slow and
cumbersome, given that {{Partition}} objects are heavyweight and carry redundant information.
The alternative is to use partition-names, which will need client-side parsing to extract
part-key values.
> When checking which hourly partitions for a particular day have been published already,
it would be preferable to have an API that pushed down part-key extraction into the {{RawStore}}
layer, and returned key-values as the result. This would be similar to how {{SELECT DISTINCT
part_key FROM my_table;}} would run, but at the {{HiveMetaStoreClient}} level.
> Here's what we've been using at Yahoo.



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