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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-19027) Make materializations invalidation cache work with multiple active remote metastores
Date Wed, 27 Jun 2018 03:43:00 GMT


Hive QA commented on HIVE-19027:

Here are the results of testing the latest attachment:

{color:green}SUCCESS:{color} +1 due to 1 test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 8 failed/errored test(s), 14586 tests executed
*Failed tests:*
TestReplicationScenariosAcrossInstances - did not produce a TEST-*.xml file (likely timed
out) (batchId=238)
org.apache.hadoop.hive.cli.TestMiniDruidCliDriver.testCliDriver[druidmini_expressions] (batchId=190)
org.apache.hadoop.hive.cli.TestMiniDruidCliDriver.testCliDriver[druidmini_masking] (batchId=190)
org.apache.hadoop.hive.cli.TestMiniDruidCliDriver.testCliDriver[druidmini_test1] (batchId=190)
org.apache.hadoop.hive.cli.TestMiniDruidCliDriver.testCliDriver[druidmini_test_insert] (batchId=190)

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.YetusPhase
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: 12929225 - PreCommit-HIVE-Build

> Make materializations invalidation cache work with multiple active remote metastores
> ------------------------------------------------------------------------------------
>                 Key: HIVE-19027
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: Materialized views
>    Affects Versions: 3.0.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>            Priority: Critical
>         Attachments: HIVE-19027.01.patch, HIVE-19027.02.patch, HIVE-19027.03.patch
> The main points:
>  - Only MVs stored in transactional tables can have a time window value of 0. Those are
the only MVs that can be guaranteed to not be outdated when a query is executed, if we use
custom storage handlers to store the materialized view, we cannot make any promises.
>  - For MVs that +cannot be outdated+, we do not check the metastore. Instead, comparison
is based on valid write id lists.
>  - For MVs that +can be outdated+, we still rely on the invalidation cache.
>  ** The window for valid outdated MVs can be specified in intervals of 1 minute (less
than that, it is difficult to have any guarantees about whether the MV is actually outdated
by less than a minute or not).
>  ** The async loading is done every interval / 2 (or probably better, we can make it

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