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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-17466) Metastore API to list unique partition-key-value combinations
Date Fri, 08 Sep 2017 10:43:01 GMT


Hive QA commented on HIVE-17466:

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 8 failed/errored test(s), 11016 tests executed
*Failed tests:*
TestAccumuloCliDriver - did not produce a TEST-*.xml file (likely timed out) (batchId=230)
TestDummy - did not produce a TEST-*.xml file (likely timed out) (batchId=230)
TestTxnCommandsBase - did not produce a TEST-*.xml file (likely timed out) (batchId=280)
org.apache.hadoop.hive.cli.TestCliDriver.testCliDriver[auto_sortmerge_join_2] (batchId=46)
org.apache.hadoop.hive.cli.TestMiniLlapCliDriver.testCliDriver[unionDistinct_1] (batchId=143)
org.apache.hadoop.hive.cli.TestMiniTezCliDriver.testCliDriver[explainanalyze_2] (batchId=100)

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: 8 tests failed

This message is automatically generated.

ATTACHMENT ID: 12885946 - PreCommit-HIVE-Build

> Metastore API to list unique partition-key-value combinations
> -------------------------------------------------------------
>                 Key: HIVE-17466
>                 URL:
>             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.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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