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From "Hive QA (JIRA)" <>
Subject [jira] [Commented] (HIVE-15539) Optimize complex multi-insert queries in Calcite
Date Tue, 10 Jan 2017 11:51:58 GMT


Hive QA commented on HIVE-15539:

Here are the results of testing the latest attachment:

{color:green}SUCCESS:{color} +1 due to 2 test(s) being added or modified.

{color:red}ERROR:{color} -1 due to 8 failed/errored test(s), 10943 tests executed
*Failed tests:*
TestDerbyConnector - did not produce a TEST-*.xml file (likely timed out) (batchId=233)
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_schema_evol_3a] (batchId=135)
org.apache.hadoop.hive.cli.TestMiniLlapLocalCliDriver.testCliDriver[subquery_notin] (batchId=150)

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: 12846555 - PreCommit-HIVE-Build

> Optimize complex multi-insert queries in Calcite
> ------------------------------------------------
>                 Key: HIVE-15539
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: Parser
>    Affects Versions: 2.2.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-15539.03.patch, HIVE-15539.04.patch, HIVE-15539.05.patch
> Currently multi-insert queries are not optimized by Calcite. Proper integration with
Calcite would include creating a _spool_ operator whose output is reused by every _insert_
statement; however, _spool_ operator has not been added to Calcite yet (CALCITE-481).
> In the meantime, and since complex logic for multi-insert queries is in FROM clause,
we can optimize the FROM clause with Calcite and connect the optimized result to the original
> Initially, we will recognize three different cases:
> - FROM clause is trivial, e.g., table reference, or not supported. No need to optimize
with Calcite.
> - FROM clause is a subquery. Optimize the subquery with Calcite.
> - FROM clause is a join. Rewrite join into a subquery and optimize it with Calcite. Change
references in INSERT statements to refer to subquery columns.
> This should be beneficial for MERGE statements processing too, since MERGE statements
are treated as multi-insert queries by Hive.

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