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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Work logged] (HDDS-1530) Ozone: Freon: Support big files larger than 2GB and add "--bufferSize" and "--validateWrites" options.
Date Fri, 17 May 2019 08:32:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-1530?focusedWorklogId=243888&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-243888
]

ASF GitHub Bot logged work on HDDS-1530:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 17/May/19 08:31
            Start Date: 17/May/19 08:31
    Worklog Time Spent: 10m 
      Work Description: hadoop-yetus commented on issue #830: HDDS-1530. Freon support big
files larger than 2GB and add --bufferSize and --validateWrites options.
URL: https://github.com/apache/hadoop/pull/830#issuecomment-493370392
 
 
   :broken_heart: **-1 overall**
   
   
   
   
   
   
   | Vote | Subsystem | Runtime | Comment |
   |:----:|----------:|--------:|:--------|
   | 0 | reexec | 41 | Docker mode activated. |
   ||| _ Prechecks _ |
   | +1 | dupname | 0 | No case conflicting files found. |
   | +1 | @author | 0 | The patch does not contain any @author tags. |
   | +1 | test4tests | 0 | The patch appears to include 1 new or modified test files. |
   ||| _ trunk Compile Tests _ |
   | +1 | mvninstall | 427 | trunk passed |
   | +1 | compile | 196 | trunk passed |
   | +1 | checkstyle | 52 | trunk passed |
   | +1 | mvnsite | 0 | trunk passed |
   | +1 | shadedclient | 890 | branch has no errors when building and testing our client artifacts.
|
   | +1 | javadoc | 145 | trunk passed |
   | 0 | spotbugs | 271 | Used deprecated FindBugs config; considering switching to SpotBugs.
|
   | +1 | findbugs | 478 | trunk passed |
   ||| _ Patch Compile Tests _ |
   | +1 | mvninstall | 407 | the patch passed |
   | +1 | compile | 204 | the patch passed |
   | +1 | javac | 204 | the patch passed |
   | +1 | checkstyle | 55 | the patch passed |
   | +1 | mvnsite | 0 | the patch passed |
   | +1 | whitespace | 0 | The patch has no whitespace issues. |
   | +1 | shadedclient | 696 | patch has no errors when building and testing our client artifacts.
|
   | +1 | javadoc | 122 | the patch passed |
   | +1 | findbugs | 441 | the patch passed |
   ||| _ Other Tests _ |
   | -1 | unit | 165 | hadoop-hdds in the patch failed. |
   | -1 | unit | 1189 | hadoop-ozone in the patch failed. |
   | +1 | asflicense | 37 | The patch does not generate ASF License warnings. |
   | | | 5673 | |
   
   
   | Reason | Tests |
   |-------:|:------|
   | Failed junit tests | hadoop.ozone.container.TestContainerReplication |
   |   | hadoop.ozone.scm.node.TestQueryNode |
   
   
   | Subsystem | Report/Notes |
   |----------:|:-------------|
   | Docker | Client=17.05.0-ce Server=17.05.0-ce base: https://builds.apache.org/job/hadoop-multibranch/job/PR-830/1/artifact/out/Dockerfile
|
   | GITHUB PR | https://github.com/apache/hadoop/pull/830 |
   | Optional Tests | dupname asflicense compile javac javadoc mvninstall mvnsite unit shadedclient
findbugs checkstyle |
   | uname | Linux 1c3367a285ee 3.13.0-153-generic #203-Ubuntu SMP Thu Jun 14 08:52:28 UTC
2018 x86_64 x86_64 x86_64 GNU/Linux |
   | Build tool | maven |
   | Personality | personality/hadoop.sh |
   | git revision | trunk / c183bd8 |
   | Default Java | 1.8.0_212 |
   | unit | https://builds.apache.org/job/hadoop-multibranch/job/PR-830/1/artifact/out/patch-unit-hadoop-hdds.txt
|
   | unit | https://builds.apache.org/job/hadoop-multibranch/job/PR-830/1/artifact/out/patch-unit-hadoop-ozone.txt
|
   |  Test Results | https://builds.apache.org/job/hadoop-multibranch/job/PR-830/1/testReport/
|
   | Max. process+thread count | 5268 (vs. ulimit of 5500) |
   | modules | C: hadoop-ozone/tools U: hadoop-ozone/tools |
   | Console output | https://builds.apache.org/job/hadoop-multibranch/job/PR-830/1/console
|
   | versions | git=2.7.4 maven=3.3.9 findbugs=3.1.0-RC1 |
   | Powered by | Apache Yetus 0.10.0 http://yetus.apache.org |
   
   
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 243888)
    Time Spent: 20m  (was: 10m)

> Ozone: Freon: Support big files larger than 2GB and add "--bufferSize" and "--validateWrites"
options.
> ------------------------------------------------------------------------------------------------------
>
>                 Key: HDDS-1530
>                 URL: https://issues.apache.org/jira/browse/HDDS-1530
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>          Components: test
>            Reporter: Xudong Cao
>            Assignee: Xudong Cao
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> *Current problems:*
>  1. Freon does not support big files larger than 2GB because it use an int type "keySize"
parameter and also "keyValue" buffer size.
>  2. Freon allocates a entire buffer for each key at once, so if the key size is large
and the concurrency is high, freon will report OOM exception frequently.
>  3. Freon lacks option such as "--validateWrites", thus users cannot manually specify
that verification is required after writing.
> *Some solutions:*
>  1. Use a long type "keySize" parameter, make sure freon can support big files larger
than 2GB.
>  2. Use a small buffer repeatedly than allocating the entire key-size buffer at once,
the default buffer size is 4K and can be configured by "–bufferSize" parameter.
>  3. Add a "--validateWrites" option to Freon command line, users can provide this option
to indicate that a validation is required after write.
>  
>  
>  



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