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https://issues.apache.org/jira/browse/HIVE-22414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16967814#comment-16967814
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Hive QA commented on HIVE-22414:
--------------------------------
Here are the results of testing the latest attachment:
https://issues.apache.org/jira/secure/attachment/12984949/HIVE-22414.5.patch
{color:red}ERROR:{color} -1 due to no test(s) being added or modified.
{color:green}SUCCESS:{color} +1 due to 17567 tests passed
Test results:
https://builds.apache.org/job/PreCommit-HIVE-Build/19299/testReport
Console output: https://builds.apache.org/job/PreCommit-HIVE-Build/19299/console
Test logs: http://104.198.109.242/logs/PreCommit-HIVE-Build-19299/
Messages:
{noformat}
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
{noformat}
This message is automatically generated.
ATTACHMENT ID: 12984949 - PreCommit-HIVE-Build
> Make LLAP CacheTags more memory efficient
> -----------------------------------------
>
> Key: HIVE-22414
> URL: https://issues.apache.org/jira/browse/HIVE-22414
> Project: Hive
> Issue Type: Improvement
> Components: llap
> Reporter: Ádám Szita
> Assignee: Ádám Szita
> Priority: Major
> Attachments: HIVE-22414.0.patch, HIVE-22414.1.patch,
> HIVE-22414.2.patch, HIVE-22414.3.patch, HIVE-22414.4.patch, HIVE-22414.5.patch
>
>
> MultiPartitionCacheTag relies on LinkedLists.
> A LinkedList object that holds e.g. 2 nodes consumes 112 bytes roughly in
> this composition:
> * 16 bytes for LinkedList object header
> * 8 bytes for referring head
> * 8 bytes for referring tail
> * 80 = 2 x (16 bytes for LinkedList$Node header, 3 x 8 bytes for referring
> prev, next, item)
> This is a lot, so I propose to replace LinkedList in MultiPartitionCacheTag
> with a simple String array. (For a similar scenario an array would take 16 +
> 8 + 2 x 8 = 40 bytes, as per header, count, and 2 references for our actual
> objects).
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