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https://issues.apache.org/jira/browse/HADOOP-14919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16192365#comment-16192365
]
Hadoop QA commented on HADOOP-14919:
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| (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:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m
0s{color} | {color:green} The patch appears to include 1 new or modified test
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m
15s{color} | {color:blue} Maven dependency ordering for branch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 13m
29s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 15m
58s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 2m
15s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
37s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green}
15m 49s{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} 2m
26s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
15s{color} | {color:green} trunk passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:blue}0{color} | {color:blue} mvndep {color} | {color:blue} 0m
21s{color} | {color:blue} Maven dependency ordering for patch {color} |
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 1m
13s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 13m
6s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 13m
6s{color} | {color:green} the patch passed {color} |
| {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange}
2m 19s{color} | {color:orange} root: The patch generated 2 new + 118 unchanged
- 9 fixed = 120 total (was 127) {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 1m
54s{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 57s{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} 2m
37s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 1m
40s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:red}-1{color} | {color:red} unit {color} | {color:red} 9m 22s{color}
| {color:red} hadoop-common in the patch failed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green}101m
37s{color} | {color:green} hadoop-mapreduce-client-jobclient in the patch
passed. {color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m
45s{color} | {color:green} The patch does not generate ASF License warnings.
{color} |
| {color:black}{color} | {color:black} {color} | {color:black}216m 49s{color} |
{color:black} {color} |
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|| Reason || Tests ||
| Failed junit tests | hadoop.security.TestKDiag |
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|| Subsystem || Report/Notes ||
| Docker | Image:yetus/hadoop:71bbb86 |
| JIRA Issue | HADOOP-14919 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12890447/HADOOP-14919.001.patch
|
| Optional Tests | asflicense compile javac javadoc mvninstall mvnsite
unit shadedclient findbugs checkstyle |
| uname | Linux 081a67763b93 3.13.0-117-generic #164-Ubuntu SMP Fri Apr 7
11:05:26 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh
|
| git revision | trunk / cae1c73 |
| Default Java | 1.8.0_144 |
| findbugs | v3.1.0-RC1 |
| checkstyle |
https://builds.apache.org/job/PreCommit-HADOOP-Build/13454/artifact/patchprocess/diff-checkstyle-root.txt
|
| unit |
https://builds.apache.org/job/PreCommit-HADOOP-Build/13454/artifact/patchprocess/patch-unit-hadoop-common-project_hadoop-common.txt
|
| Test Results |
https://builds.apache.org/job/PreCommit-HADOOP-Build/13454/testReport/ |
| modules | C: hadoop-common-project/hadoop-common
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient
U: . |
| Console output |
https://builds.apache.org/job/PreCommit-HADOOP-Build/13454/console |
| Powered by | Apache Yetus 0.6.0-SNAPSHOT http://yetus.apache.org |
This message was automatically generated.
> BZip2 drops records when reading data in splits
> -----------------------------------------------
>
> Key: HADOOP-14919
> URL: https://issues.apache.org/jira/browse/HADOOP-14919
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 2.8.0, 2.7.3, 3.0.0-alpha1
> Reporter: Aki Tanaka
> Assignee: Jason Lowe
> Priority: Critical
> Attachments: 250000.bz2, HADOOP-14919.001.patch,
> HADOOP-14919-test.patch
>
>
> BZip2 can drop records when reading data in splits. This problem was already
> discussed before in HADOOP-11445 and HADOOP-13270. But we still have a
> problem in corner case, causing lost data blocks.
>
> I attached a unit test for this issue. You can reproduce the problem if you
> run the unit test.
>
> First, this issue happens when position of newly created stream is equal to
> start of split. Hadoop has some test cases for this (blockEndingInCR.txt.bz2
> file for TestLineRecordReader#testBzip2SplitStartAtBlockMarker, etc).
> However, the issue I am reporting does not happen when we run these tests
> because this issue happens only when the start of split byte block includes
> both block marker and compressed data.
>
> BZip2 block marker - 0x314159265359
> (001100010100000101011001001001100101001101011001)
>
> blockEndingInCR.txt.bz2 (Start of Split - 136504):
> {code:java}
> $ xxd -l 6 -g 1 -b -seek 136498
> ./hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/target/test-classes/blockEndingInCR.txt.bz2
> 0021532: 00110001 01000001 01011001 00100110 01010011 01011001 1AY&SY
> {code}
>
> Test bz2 File (Start of Split - 203426)
> {code:java}
> $ xxd -l 7 -g 1 -b -seek 203419 250000.bz2
> 0031a9b: 11100110 00101000 00101011 00100100 11001010 01101011 .(+$.k
> 0031aa1: 00101111 /
> {code}
>
> Let's say a job splits this test bz2 file into two splits at the start of
> split (position 203426).
> The former split does not read records which start position 203426 because
> BZip2 says the position of these dropped records is 203427. The latter split
> does not read the records because BZip2CompressionInputStream read the block
> from position 320955.
> Due to this behavior, records between 203427 and 320955 are lost.
> Also, if we reverted the changes in HADOOP-13270, we will not see this issue.
> We will see HADOOP-13270 issue though.
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