[
https://issues.apache.org/jira/browse/HADOOP-17296?focusedWorklogId=535354&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-535354
]
ASF GitHub Bot logged work on HADOOP-17296:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 13/Jan/21 12:32
Start Date: 13/Jan/21 12:32
Worklog Time Spent: 10m
Work Description: hadoop-yetus commented on pull request #2618:
URL: https://github.com/apache/hadoop/pull/2618#issuecomment-759418907
:confetti_ball: **+1 overall**
| Vote | Subsystem | Runtime | Comment |
|:----:|----------:|--------:|:--------|
| +0 :ok: | reexec | 29m 20s | Docker mode activated. |
||| _ Prechecks _ |
| +1 :green_heart: | dupname | 0m 1s | No case conflicting files
found. |
| +0 :ok: | markdownlint | 0m 0s | markdownlint was not available. |
| +1 :green_heart: | @author | 0m 0s | The patch does not contain any
@author tags. |
| +1 :green_heart: | test4tests | 0m 0s | The patch appears to include
15 new or modified test files. |
||| _ branch-3.3 Compile Tests _ |
| +1 :green_heart: | mvninstall | 32m 34s | branch-3.3 passed |
| +1 :green_heart: | compile | 0m 36s | branch-3.3 passed |
| +1 :green_heart: | checkstyle | 0m 28s | branch-3.3 passed |
| +1 :green_heart: | mvnsite | 0m 36s | branch-3.3 passed |
| +1 :green_heart: | shadedclient | 16m 27s | branch has no errors when
building and testing our client artifacts. |
| +1 :green_heart: | javadoc | 0m 27s | branch-3.3 passed |
| +0 :ok: | spotbugs | 0m 58s | Used deprecated FindBugs config;
considering switching to SpotBugs. |
| +1 :green_heart: | findbugs | 0m 56s | branch-3.3 passed |
||| _ Patch Compile Tests _ |
| +1 :green_heart: | mvninstall | 0m 29s | the patch passed |
| +1 :green_heart: | compile | 0m 27s | the patch passed |
| +1 :green_heart: | javac | 0m 27s | the patch passed |
| +1 :green_heart: | checkstyle | 0m 19s | the patch passed |
| +1 :green_heart: | mvnsite | 0m 31s | the patch passed |
| +1 :green_heart: | whitespace | 0m 0s | The patch has no whitespace
issues. |
| +1 :green_heart: | xml | 0m 3s | The patch has no ill-formed XML
file. |
| +1 :green_heart: | shadedclient | 15m 38s | patch has no errors when
building and testing our client artifacts. |
| +1 :green_heart: | javadoc | 0m 23s | the patch passed |
| +1 :green_heart: | findbugs | 0m 59s | the patch passed |
||| _ Other Tests _ |
| +1 :green_heart: | unit | 1m 28s | hadoop-azure in the patch passed.
|
| +1 :green_heart: | asflicense | 0m 33s | The patch does not generate
ASF License warnings. |
| | | 103m 57s | |
| Subsystem | Report/Notes |
|----------:|:-------------|
| Docker | ClientAPI=1.41 ServerAPI=1.41 base:
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2618/1/artifact/out/Dockerfile
|
| GITHUB PR | https://github.com/apache/hadoop/pull/2618 |
| Optional Tests | dupname asflicense compile javac javadoc mvninstall
mvnsite unit shadedclient xml findbugs checkstyle markdownlint |
| uname | Linux 52c65b4cc2eb 4.15.0-65-generic #74-Ubuntu SMP Tue Sep 17
17:06:04 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | dev-support/bin/hadoop.sh |
| git revision | branch-3.3 / 75f34a1 |
| Default Java | Private Build-1.8.0_275-8u275-b01-0ubuntu1~16.04-b01 |
| Test Results |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2618/1/testReport/ |
| Max. process+thread count | 538 (vs. ulimit of 5500) |
| modules | C: hadoop-tools/hadoop-azure U: hadoop-tools/hadoop-azure |
| Console output |
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-2618/1/console |
| versions | git=2.7.4 maven=3.3.9 findbugs=3.1.0-RC1 |
| Powered by | Apache Yetus 0.12.0 https://yetus.apache.org |
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Issue Time Tracking
-------------------
Worklog Id: (was: 535354)
Time Spent: 0.5h (was: 20m)
> ABFS: Allow Random Reads to be of Buffer Size
> ---------------------------------------------
>
> Key: HADOOP-17296
> URL: https://issues.apache.org/jira/browse/HADOOP-17296
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.3.0
> Reporter: Sneha Vijayarajan
> Assignee: Sneha Vijayarajan
> Priority: Major
> Labels: abfsactive, pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> ADLS Gen2/ABFS driver is optimized to read only the bytes that are requested
> for when the read pattern is random.
> It was observed in some spark jobs that though the reads are random, the next
> read doesn't skip by a lot and can be served by the earlier read if read was
> done in buffer size. As a result the job triggered a higher count of read
> calls/higher IOPS, resulting in higher IOPS throttling and hence resulted in
> higher job runtime.
> When these jobs were run against Gen1 which always reads in buffer size , the
> jobs fared well.
> This Jira attempts to get a Gen1 customer migrating to Gen2 get the same
> overall i/o pattern as gen1 and the same perf characteristics.
> *+Stats from Customer Job:+*
>
> |*Customer Job*|*Gen 1 timing*|*Gen 2 Without patch*|*Gen2 with patch and
> RAH=0*|
> |Job1|2 h 47 m|3 h 45 m|2 h 27 mins|
> |Job2|2 h 17 m|3 h 24 m|2 h 39 mins|
> |Job3|3 h 16 m|4 h 29 m|3 h 21 mins|
> |Job4|1 h 59 m|3 h 12 m|2 h 28 mins|
>
> *+Stats from Internal TPCDs runs+*
> [Total number of TPCDs queries per suite run = 80
> Full suite repeat run count per config = 3]
> | |*Gen1*|Gen2 Without patch|*Gen2 With patch and RAH=0*
> *(Gen2 in Gen1 config)*|*Gen2 With patch and RAH=2*|
> |%Run Duration|100|140|213|70-90|
> |%Read IOPS|100|106|98|110-115|
>
> *Without patch = default Jar with random read logic
> *With patch=Modified Jar with change to always read buffer size
> *RAH=ReadAheadQueueDepth
>
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