[
https://issues.apache.org/jira/browse/HIVE-26144?focusedWorklogId=757485&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-757485
]
ASF GitHub Bot logged work on HIVE-26144:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 15/Apr/22 19:24
Start Date: 15/Apr/22 19:24
Worklog Time Spent: 10m
Work Description: kovjanos opened a new pull request, #3214:
URL: https://github.com/apache/hive/pull/3214
### What changes were proposed in this pull request?
Missing keys/index is to be added to the HMS backend db schema
### Why are the changes needed?
On a high-concurrency test we found that backend database is doing full
table scans in some cases where the table has missing key/index.
### Does this PR introduce _any_ user-facing change?
No
### How was this patch tested?
Integration tests for all database types:
```
[INFO] -------------------------------------------------------
[INFO] T E S T S
[INFO] -------------------------------------------------------
[INFO] Running org.apache.hadoop.hive.metastore.dbinstall.ITestPostgres
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed:
13.949 s - in org.apache.hadoop.hive.metastore.dbinstall.ITestPostgres
[INFO] Running org.apache.hadoop.hive.metastore.dbinstall.ITestMssql
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed:
33.711 s - in org.apache.hadoop.hive.metastore.dbinstall.ITestMssql
[INFO] Running org.apache.hadoop.hive.metastore.dbinstall.ITestMysql
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed:
39.032 s - in org.apache.hadoop.hive.metastore.dbinstall.ITestMysql
[INFO] Running org.apache.hadoop.hive.metastore.dbinstall.ITestDerby
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 5.101
s - in org.apache.hadoop.hive.metastore.dbinstall.ITestDerby
[INFO] Running org.apache.hadoop.hive.metastore.dbinstall.ITestOracle
[INFO] Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed:
94.393 s - in org.apache.hadoop.hive.metastore.dbinstall.ITestOracle
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 10, Failures: 0, Errors: 0, Skipped: 0
```
Issue Time Tracking
-------------------
Worklog Id: (was: 757485)
Remaining Estimate: 0h
Time Spent: 10m
> Add keys/indexes to support highly concurrent workload
> ------------------------------------------------------
>
> Key: HIVE-26144
> URL: https://issues.apache.org/jira/browse/HIVE-26144
> Project: Hive
> Issue Type: Sub-task
> Components: Database/Schema
> Reporter: Janos Kovacs
> Assignee: Janos Kovacs
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The following indexes are added to avoid full table-scan in backend rdbms:
> - primary key for COMPLETED_TXN_COMPONENTS
> - primary key for TXN_COMPONENTS
> - index for TXN_WRITE_NOTIFICATION_LOG
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