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https://issues.apache.org/jira/browse/HADOOP-15273?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16390093#comment-16390093
 ] 

genericqa commented on HADOOP-15273:
------------------------------------

| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
16s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:red}-1{color} | {color:red} test4tests {color} | {color:red}  0m  
0s{color} | {color:red} The patch doesn't appear to include any new or modified 
tests. Please justify why no new tests are needed for this patch. Also please 
list what manual steps were performed to verify this patch. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 17m 
42s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
24s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green}  0m 
16s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
25s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
10m 22s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
| {color:green}+1{color} | {color:green} findbugs {color} | {color:green}  0m 
31s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green}  0m 
17s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
24s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
21s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
21s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}  
0m 12s{color} | {color:orange} hadoop-tools/hadoop-distcp: The patch generated 
1 new + 8 unchanged - 2 fixed = 9 total (was 10) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
21s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
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} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.tools.mapred.TestCopyMapper |
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|| 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 | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/14272/testReport/ |
| Max. process+thread count | 341 (vs. ulimit of 10000) |
| modules | C: hadoop-tools/hadoop-distcp U: hadoop-tools/hadoop-distcp |
| Console output | 
https://builds.apache.org/job/PreCommit-HADOOP-Build/14272/console |
| Powered by | Apache Yetus 0.8.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> 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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