[jira] [Commented] (HADOOP-15273) distcp can't handle remote stores with different checksum algorithms
[
https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16391140#comment-16391140
]
Hudson commented on HADOOP-15273:
-
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13797 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/13797/])
HADOOP-15273.distcp can't handle remote stores with different checksum (stevel:
rev 7ef4d942dd96232b0743a40ed25f77065254f94d)
* (edit)
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/DistCpOptions.java
* (edit)
hadoop-tools/hadoop-distcp/src/main/java/org/apache/hadoop/tools/mapred/RetriableFileCopyCommand.java
* (edit)
hadoop-tools/hadoop-distcp/src/test/java/org/apache/hadoop/tools/mapred/TestCopyMapper.java
> distcp can't handle remote stores with different checksum algorithms
>
>
> Key: HADOOP-15273
> URL: https://issues.apache.org/jira/browse/HADOOP-15273
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
>Affects Versions: 3.1.0
>Reporter: Steve Loughran
>Assignee: Steve Loughran
>Priority: Critical
> Fix For: 3.1.0
>
> Attachments: HADOOP-15273-001.patch, HADOOP-15273-002.patch,
> HADOOP-15273-003.patch
>
>
> When using distcp without {{-skipcrcchecks}} . If there's a checksum mismatch
> between src and dest store types (e.g hdfs to s3), then the error message
> will talk about blocksize, even when its the underlying checksum protocol
> itself which is the cause for failure
> bq. Source and target differ in block-size. Use -pb to preserve block-sizes
> during copy. Alternatively, skip checksum-checks altogether, using -skipCrc.
> (NOTE: By skipping checksums, one runs the risk of masking data-corruption
> during file-transfer.)
> update: the CRC check takes always place on a distcp upload before the file
> is renamed into place. *and you can't disable it then*
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[jira] [Commented] (HADOOP-15273) distcp can't handle remote stores with different checksum algorithms
[
https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16390602#comment-16390602
]
Aaron Fabbri commented on HADOOP-15273:
---
LGTM. +1
Testing: I only ran the TestCopyMapper unit test
> distcp can't handle remote stores with different checksum algorithms
>
>
> Key: HADOOP-15273
> URL: https://issues.apache.org/jira/browse/HADOOP-15273
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
>Affects Versions: 3.1.0
>Reporter: Steve Loughran
>Assignee: Steve Loughran
>Priority: Critical
> Attachments: HADOOP-15273-001.patch, HADOOP-15273-002.patch,
> HADOOP-15273-003.patch
>
>
> When using distcp without {{-skipcrcchecks}} . If there's a checksum mismatch
> between src and dest store types (e.g hdfs to s3), then the error message
> will talk about blocksize, even when its the underlying checksum protocol
> itself which is the cause for failure
> bq. Source and target differ in block-size. Use -pb to preserve block-sizes
> during copy. Alternatively, skip checksum-checks altogether, using -skipCrc.
> (NOTE: By skipping checksums, one runs the risk of masking data-corruption
> during file-transfer.)
> update: the CRC check takes always place on a distcp upload before the file
> is renamed into place. *and you can't disable it then*
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[jira] [Commented] (HADOOP-15273) distcp can't handle remote stores with different checksum algorithms
[
https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16390390#comment-16390390
]
genericqa commented on HADOOP-15273:
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> distcp can't handle remote stores with different checksum algorithms
>
[jira] [Commented] (HADOOP-15273) distcp can't handle remote stores with different checksum algorithms
[
https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16390297#comment-16390297
]
genericqa commented on HADOOP-15273:
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[jira] [Commented] (HADOOP-15273) distcp can't handle remote stores with different checksum algorithms
[
https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16390291#comment-16390291
]
Steve Loughran commented on HADOOP-15273:
-
Patch 003
* fixes checkstyle
* fixes tests
With HADOOP-15297 making the etags => checksum feature in s3a optional, this
isn't quite a blocker, but it is when you try to distcp between any two stores
with different algorithms, because only -update lets you skip the checks right
now. If any other FS offers checksums, things will break
> distcp can't handle remote stores with different checksum algorithms
>
>
> Key: HADOOP-15273
> URL: https://issues.apache.org/jira/browse/HADOOP-15273
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
>Affects Versions: 3.1.0
>Reporter: Steve Loughran
>Assignee: Steve Loughran
>Priority: Critical
> Attachments: HADOOP-15273-001.patch, HADOOP-15273-002.patch,
> HADOOP-15273-003.patch
>
>
> When using distcp without {{-skipcrcchecks}} . If there's a checksum mismatch
> between src and dest store types (e.g hdfs to s3), then the error message
> will talk about blocksize, even when its the underlying checksum protocol
> itself which is the cause for failure
> bq. Source and target differ in block-size. Use -pb to preserve block-sizes
> during copy. Alternatively, skip checksum-checks altogether, using -skipCrc.
> (NOTE: By skipping checksums, one runs the risk of masking data-corruption
> during file-transfer.)
> update: the CRC check takes always place on a distcp upload before the file
> is renamed into place. *and you can't disable it then*
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[jira] [Commented] (HADOOP-15273) distcp can't handle remote stores with different checksum algorithms
[
https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16390179#comment-16390179
]
Steve Loughran commented on HADOOP-15273:
-
This is what you get now
{code}
Checksum mismatch between hdfs://localhost:50883/tmp/source/5/6 and
hdfs://localhost:50883/tmp/target/.distcp.tmp.attempt___m_00_0. Source
and target differ in block-size.
Use -pb to preserve block-sizes during copy. You can skip checksum-checks
altogether with -skipcrccheck.
(NOTE: By skipping checksums, one runs the risk of masking data-corruption
during file-transfer.)
{code}
> distcp can't handle remote stores with different checksum algorithms
>
>
> Key: HADOOP-15273
> URL: https://issues.apache.org/jira/browse/HADOOP-15273
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
>Affects Versions: 3.1.0
>Reporter: Steve Loughran
>Assignee: Steve Loughran
>Priority: Critical
> Attachments: HADOOP-15273-001.patch
>
>
> When using distcp without {{-skipcrcchecks}} . If there's a checksum mismatch
> between src and dest store types (e.g hdfs to s3), then the error message
> will talk about blocksize, even when its the underlying checksum protocol
> itself which is the cause for failure
> bq. Source and target differ in block-size. Use -pb to preserve block-sizes
> during copy. Alternatively, skip checksum-checks altogether, using -skipCrc.
> (NOTE: By skipping checksums, one runs the risk of masking data-corruption
> during file-transfer.)
> update: the CRC check takes always place on a distcp upload before the file
> is renamed into place. *and you can't disable it then*
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[jira] [Commented] (HADOOP-15273) distcp can't handle remote stores with different checksum algorithms
[
https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16390143#comment-16390143
]
Steve Loughran commented on HADOOP-15273:
-
copymapper contains test to look for string of (incorrect) -skipCrc message. So
not just wrong, tests to make sure it stays wrong :)
> distcp can't handle remote stores with different checksum algorithms
>
>
> Key: HADOOP-15273
> URL: https://issues.apache.org/jira/browse/HADOOP-15273
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
>Affects Versions: 3.1.0
>Reporter: Steve Loughran
>Assignee: Steve Loughran
>Priority: Critical
> Attachments: HADOOP-15273-001.patch
>
>
> When using distcp without {{-skipcrcchecks}} . If there's a checksum mismatch
> between src and dest store types (e.g hdfs to s3), then the error message
> will talk about blocksize, even when its the underlying checksum protocol
> itself which is the cause for failure
> bq. Source and target differ in block-size. Use -pb to preserve block-sizes
> during copy. Alternatively, skip checksum-checks altogether, using -skipCrc.
> (NOTE: By skipping checksums, one runs the risk of masking data-corruption
> during file-transfer.)
> update: the CRC check takes always place on a distcp upload before the file
> is renamed into place. *and you can't disable it then*
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[jira] [Commented] (HADOOP-15273) distcp can't handle remote stores with different checksum algorithms
[
https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16390093#comment-16390093
]
genericqa commented on HADOOP-15273:
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11m 10s{color} | {color:green} patch has no errors when building and testing
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m
36s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m
15s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 14m 41s{color}
| {color:red} hadoop-distcp in the patch failed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
23s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 58m 50s{color} |
{color:black} {color} |
\\
\\
|| Reason || Tests ||
| Failed junit tests | hadoop.tools.mapred.TestCopyMapper |
\\
\\
|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:d4cc50f |
| JIRA Issue | HADOOP-15273 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12913420/HADOOP-15273-001.patch
|
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit shadedclient findbugs checkstyle |
| uname | Linux 44786d213856 3.13.0-135-generic #184-Ubuntu SMP Wed Oct 18
11:55:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / d69b31f |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
| findbugs | v3.1.0-RC1 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HADOOP-Build/14272/artifact/out/diff-checkstyle-hadoop-tools_hadoop-distcp.txt
|
| unit |
https://builds.apache.org/job/PreCommit-HADOOP-Build/14272/artifact/out/patch-unit-hadoop-tools_hadoop-distcp.txt
|
| Test Results |
[jira] [Commented] (HADOOP-15273) distcp can't handle remote stores with different checksum algorithms
[
https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16389953#comment-16389953
]
Steve Loughran commented on HADOOP-15273:
-
An initial distcp always does a checksum check during upload
This sequence will fail
{code}
hadoop fs -rm -R -skipTrash s3a://hwdev-steve-new/\*
hadoop distcp /user/steve/data s3a://hwdev-steve-new/data
{code}
Here
{code}
18/03/07 17:08:03 INFO mapreduce.Job: Task Id :
attempt_1520388269891_0019_m_04_2, Status : FAILED
Error: java.io.IOException: File copy failed:
hdfs://mycluster/user/steve/data/example.py -->
s3a://hwdev-steve-new/data/example.py
at
org.apache.hadoop.tools.mapred.CopyMapper.copyFileWithRetry(CopyMapper.java:259)
at org.apache.hadoop.tools.mapred.CopyMapper.map(CopyMapper.java:217)
at org.apache.hadoop.tools.mapred.CopyMapper.map(CopyMapper.java:48)
at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:794)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:342)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:174)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1965)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:168)
Caused by: java.io.IOException: Couldn't run retriable-command: Copying
hdfs://mycluster/user/steve/data/example.py to
s3a://hwdev-steve-new/data/example.py
at
org.apache.hadoop.tools.util.RetriableCommand.execute(RetriableCommand.java:101)
at
org.apache.hadoop.tools.mapred.CopyMapper.copyFileWithRetry(CopyMapper.java:256)
... 10 more
Caused by: java.io.IOException: Check-sum mismatch between
hdfs://mycluster/user/steve/data/example.py and
s3a://hwdev-steve-new/data-connectors/.distcp.tmp.attempt_1520388269891_0019_m_04_2.
Source and target differ in block-size. Use -pb to preserve block-sizes during
copy. Alternatively, skip checksum-checks altogether, using -skipCrc. (NOTE: By
skipping checksums, one runs the risk of masking data-corruption during
file-transfer.)
at
org.apache.hadoop.tools.mapred.RetriableFileCopyCommand.compareCheckSums(RetriableFileCopyCommand.java:223)
at
org.apache.hadoop.tools.mapred.RetriableFileCopyCommand.doCopy(RetriableFileCopyCommand.java:133)
at
org.apache.hadoop.tools.mapred.RetriableFileCopyCommand.doExecute(RetriableFileCopyCommand.java:99)
at
org.apache.hadoop.tools.util.RetriableCommand.execute(RetriableCommand.java:87)
... 11 more
{code}
You cannot use -skipcrccheck as the validator forbids it, yet without it you
can't upload to hdfs to s3a now that it serves up its checksums as etags.
> distcp can't handle remote stores with different checksum algorithms
>
>
> Key: HADOOP-15273
> URL: https://issues.apache.org/jira/browse/HADOOP-15273
> Project: Hadoop Common
> Issue Type: Bug
> Components: tools/distcp
>Affects Versions: 3.1.0
>Reporter: Steve Loughran
>Priority: Critical
> Attachments: HADOOP-15273-001.patch
>
>
> When using distcp without {{-skipcrcchecks}} . If there's a checksum mismatch
> between src and dest store types (e.g hdfs to s3), then the error message
> will talk about blocksize, even when its the underlying checksum protocol
> itself which is the cause for failure
> bq. Source and target differ in block-size. Use -pb to preserve block-sizes
> during copy. Alternatively, skip checksum-checks altogether, using -skipCrc.
> (NOTE: By skipping checksums, one runs the risk of masking data-corruption
> during file-transfer.)
> update: the CRC check takes always place on a distcp upload before the file
> is renamed into place. *and you can't disable it then*
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