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From "Prasanth Jayachandran (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HIVE-21369) LLAP: Logging is expensive in encoded reader path
Date Fri, 01 Mar 2019 18:29:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-21369?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Prasanth Jayachandran reassigned HIVE-21369:
--------------------------------------------


> LLAP: Logging is expensive in encoded reader path
> -------------------------------------------------
>
>                 Key: HIVE-21369
>                 URL: https://issues.apache.org/jira/browse/HIVE-21369
>             Project: Hive
>          Issue Type: Bug
>          Components: Logging
>    Affects Versions: 4.0.0, 3.2.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Nita Dembla
>            Priority: Major
>
> There should be no INFO logging in EncodedReaderImpl. Stringifying of disk ranges is
expensive in core read path.
> {code:java}
> 2019-03-01T17:55:56.322852142Z 2019-03-01T17:55:56,306 INFO  [IO-Elevator-Thread-3 (hive_20190301175546_a279f33c-4f2b-4cd5-8695-57bc8b042a61)]
encoded.EncodedReaderImpl: Disk ranges after cache (found everything true; file [-3693547618692831801,
1551190876000, 1047660824], base offset 792920167): [{start: 887940 end: 1003508 cache buffer:
0x5165f83d(1)}, {start: 1003508 end: 1119078 cache buffer: 0xb63cac3(1)}, {start: 1119078
end: 1234745 cache buffer: 0x41a724fa(1)}, {start: 1234745 end: 1350261 cache buffer: 0x2f71bc38(1)},
{start: 1350261 end: 1465752 cache buffer: 0x2c38e1bb(1)}, {start: 1465752 end: 1581231 cache
buffer: 0x5827982(1)}, {start: 1581231 end: 1696885 cache buffer: 0x75a6773c(1)}, {start:
1696885 end: 1812492 cache buffer: 0x2ed060f9(1)},{start: 1812492 end: 1928086 cache buffer:
0x20b2c8aa(1)}, {start: 1928086 end: 2043588 cache buffer: 0x6559aacb(1)}, {start: 2043588
end: 2159089 cache buffer: 0x569c85e1(1)}, {start: 2159089 end: 2274725 cache buffer: 0x25a88dd0(1)},
{start: 2274725 end: 2390228 cache buffer: 0x738b7e87(1)}, {start: 2390228 end: 2505715 cache
buffer: 0x26edafa0(1)}, {start: 2505715 end: 2621322 cache buffer: 0x69db7752(1)}, {start:
2621322 end: 2736844 cache b{code}



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