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Posted to common-dev@hadoop.apache.org by "Owen O'Malley (JIRA)" <ji...@apache.org> on 2007/12/04 01:28:43 UTC
[jira] Created: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
create a micro-benchmark for measure local-file versus hdfs read
----------------------------------------------------------------
Key: HADOOP-2342
URL: https://issues.apache.org/jira/browse/HADOOP-2342
Project: Hadoop
Issue Type: Test
Components: dfs
Reporter: Owen O'Malley
Assignee: Owen O'Malley
Fix For: 0.16.0
We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-2342:
----------------------------------
Status: Patch Available (was: Open)
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-2342:
----------------------------------
Status: Patch Available (was: Open)
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop Core
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: 2342-1.patch, throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Chris Douglas (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12560191#action_12560191 ]
Chris Douglas commented on HADOOP-2342:
---------------------------------------
The patch no longer applies to trunk (AllTestDriver has new items).
* Using ToolBase/ToolRunner would pick up its functionality, including:
** It would be useful for the file size and buffer size to be configurable through the config/generic options
** Noting the rep param in the usage might also be helpful
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Tom White (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12553401 ]
Tom White commented on HADOOP-2342:
-----------------------------------
I got the same error running the same distribution on Linux too. One fix would be to make the createNameNode method public, but I'd rather find another way if possible.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-2342:
----------------------------------
Status: Open (was: Patch Available)
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop Core
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: 2342-1.patch, throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12548887 ]
Hadoop QA commented on HADOOP-2342:
-----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12371075/throughput.patch
against trunk revision r601518.
@author +1. The patch does not contain any @author tags.
javadoc +1. The javadoc tool did not generate any warning messages.
javac +1. The applied patch does not generate any new compiler warnings.
findbugs +1. The patch does not introduce any new Findbugs warnings.
core tests +1. The patch passed core unit tests.
contrib tests -1. The patch failed contrib unit tests.
Test results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1276/testReport/
Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1276/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1276/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1276/console
This message is automatically generated.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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You can reply to this email to add a comment to the issue online.
[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-2342:
----------------------------------
Attachment: throughput.patch
This benchmark reads and writes files using java.io, RawLocalFileSystem, LocalFileSystem, and HDFS and reports the time.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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You can reply to this email to add a comment to the issue online.
[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-2342:
----------------------------------
Status: Open (was: Patch Available)
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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You can reply to this email to add a comment to the issue online.
[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-2342:
----------------------------------
Attachment: 2342-1.patch
Here is an update to trunk and switch to use Tool. Thanks, Chris!
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop Core
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: 2342-1.patch, throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Nigel Daley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nigel Daley updated HADOOP-2342:
--------------------------------
Resolution: Fixed
Status: Resolved (was: Patch Available)
Test failures were irrelevant to this patch. I just committed this. Thanks Owen!
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop Core
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: 2342-1.patch, throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12548351 ]
Owen O'Malley commented on HADOOP-2342:
---------------------------------------
The numbers I'm seeing for reads and writes on 10GB are:
Raw Local FS write: 152 read: 79
Local FS write: 203 read: 78
mini-DFS write: 269 read: 134
which suggests that writing checksums is pretty expensive and that HADOOP-2144 is reproducible.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Tom White (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12549480 ]
Tom White commented on HADOOP-2342:
-----------------------------------
I built a distribution with this patch and got the following error. It looks like MiniDFSCluster and NameNode are loaded by different classloaders which causes the package access on createNameNode to fail.
>bin/hadoop jar hadoop-0.16.0-dev-test.jar dfsthroughput
Local = /tmp/hadoop-tom/mapred/temp
Writing local time: 246
Reading local time: 219
Writing raw time: 225
Reading raw time: 216
Writing checked time: 219
Reading checked time: 238
java.lang.IllegalAccessError: tried to access method org.apache.hadoop.dfs.NameNode.createNameNode([Ljava/lang/String;Lorg/apache/hadoop/conf/Configuration;)Lorg/apache/hadoop/dfs/NameNode; from class org.apache.hadoop.dfs.MiniDFSCluster
at org.apache.hadoop.dfs.MiniDFSCluster.<init>(MiniDFSCluster.java:179)
at org.apache.hadoop.dfs.MiniDFSCluster.<init>(MiniDFSCluster.java:118)
at org.apache.hadoop.dfs.MiniDFSCluster.<init>(MiniDFSCluster.java:90)
at org.apache.hadoop.dfs.BenchmarkThroughput.main(BenchmarkThroughput.java:190)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
at org.apache.hadoop.test.AllTestDriver.main(AllTestDriver.java:75)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12548820 ]
Hadoop QA commented on HADOOP-2342:
-----------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12371063/throughput.patch
against trunk revision r601491.
@author +1. The patch does not contain any @author tags.
javadoc +1. The javadoc tool did not generate any warning messages.
javac +1. The applied patch does not generate any new compiler warnings.
findbugs +1. The patch does not introduce any new Findbugs warnings.
core tests +1. The patch passed core unit tests.
contrib tests +1. The patch passed contrib unit tests.
Test results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1274/testReport/
Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1274/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1274/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1274/console
This message is automatically generated.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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You can reply to this email to add a comment to the issue online.
[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-2342:
----------------------------------
Status: Patch Available (was: Open)
Need to be re-reviewed by QA.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Doug Cutting (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12548353 ]
Doug Cutting commented on HADOOP-2342:
--------------------------------------
> which suggests that writing checksums is pretty expensive
But reading checksums does not seem to be too expensive, which is nice to see. However HDFS reads are *much* slower than local reads, which is worrisome. That seems to be the biggest outlier in your data: checksums add ~25%, while non-local reads adds ~90%.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Hadoop QA (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12562612#action_12562612 ]
Hadoop QA commented on HADOOP-2342:
-----------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12374004/2342-1.patch
against trunk revision 614721.
@author +1. The patch does not contain any @author tags.
javadoc +1. The javadoc tool did not generate any warning messages.
javac +1. The applied patch does not generate any new compiler warnings.
findbugs +1. The patch does not introduce any new Findbugs warnings.
core tests -1. The patch failed core unit tests.
contrib tests -1. The patch failed contrib unit tests.
Test results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1678/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1678/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1678/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hadoop-Patch/1678/console
This message is automatically generated.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop Core
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: 2342-1.patch, throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Chris Douglas (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12557862#action_12557862 ]
Chris Douglas commented on HADOOP-2342:
---------------------------------------
I ran this on MacOS (jdk1.5.0_13), Linux (jdk1.5.0_08 and jdk1.6.0), and Windows (jdk1.6.0) using the latest trunk and cannot reproduce this case.
Tom: Are you still seeing this issue?
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
--
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You can reply to this email to add a comment to the issue online.
[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Hudson (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12562857#action_12562857 ]
Hudson commented on HADOOP-2342:
--------------------------------
Integrated in Hadoop-trunk #380 (See [http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/380/])
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop Core
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: 2342-1.patch, throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Commented: (HADOOP-2342) create a micro-benchmark for
measure local-file versus hdfs read
Posted by "Raghu Angadi (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12548352 ]
Raghu Angadi commented on HADOOP-2342:
--------------------------------------
Doesn't LocalFS do Checksums too? Read on Local FS is as fast as Raw Local.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-2342:
----------------------------------
Attachment: throughput.patch
I forgot to restart the time on the local read and write.
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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[jira] Updated: (HADOOP-2342) create a micro-benchmark for measure
local-file versus hdfs read
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-2342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Owen O'Malley updated HADOOP-2342:
----------------------------------
Attachment: (was: throughput.patch)
> create a micro-benchmark for measure local-file versus hdfs read
> ----------------------------------------------------------------
>
> Key: HADOOP-2342
> URL: https://issues.apache.org/jira/browse/HADOOP-2342
> Project: Hadoop
> Issue Type: Test
> Components: dfs
> Reporter: Owen O'Malley
> Assignee: Owen O'Malley
> Fix For: 0.16.0
>
> Attachments: throughput.patch
>
>
> We should have a benchmark that measures reading a 10g file from hdfs and from local disk.
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