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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-8078) HDFS client gets errors trying to to connect to IPv6 DataNode
Date Thu, 13 Aug 2015 01:30:46 GMT

    [ https://issues.apache.org/jira/browse/HDFS-8078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14694522#comment-14694522
] 

Hadoop QA commented on HDFS-8078:
---------------------------------

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| (x) *{color:red}-1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | pre-patch |  17m  4s | Pre-patch trunk compilation is healthy. |
| {color:green}+1{color} | @author |   0m  0s | The patch does not contain any @author tags.
|
| {color:red}-1{color} | tests included |   0m  0s | 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:green}+1{color} | javac |   7m 55s | There were no new javac warning messages. |
| {color:green}+1{color} | javadoc |   9m 50s | There were no new javadoc warning messages.
|
| {color:green}+1{color} | release audit |   0m 24s | The applied patch does not increase
the total number of release audit warnings. |
| {color:green}+1{color} | checkstyle |   1m 14s | There were no new checkstyle issues. |
| {color:red}-1{color} | whitespace |   0m  0s | The patch has 1  line(s) that end in whitespace.
Use git apply --whitespace=fix. |
| {color:green}+1{color} | install |   1m 22s | mvn install still works. |
| {color:green}+1{color} | eclipse:eclipse |   0m 34s | The patch built with eclipse:eclipse.
|
| {color:green}+1{color} | findbugs |   1m 58s | The patch does not introduce any new Findbugs
(version 3.0.0) warnings. |
| {color:red}-1{color} | common tests |  22m 46s | Tests failed in hadoop-common. |
| | |  63m 11s | |
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|| Reason || Tests ||
| Failed unit tests | hadoop.ha.TestZKFailoverController |
|   | hadoop.net.TestNetUtils |
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|| Subsystem || Report/Notes ||
| Patch URL | http://issues.apache.org/jira/secure/attachment/12750193/dummy.patch |
| Optional Tests | javadoc javac unit findbugs checkstyle |
| git revision | trunk / 6cc8e38 |
| whitespace | https://builds.apache.org/job/PreCommit-HDFS-Build/11984/artifact/patchprocess/whitespace.txt
|
| hadoop-common test log | https://builds.apache.org/job/PreCommit-HDFS-Build/11984/artifact/patchprocess/testrun_hadoop-common.txt
|
| Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/11984/testReport/ |
| Java | 1.7.0_55 |
| uname | Linux asf903.gq1.ygridcore.net 3.13.0-36-lowlatency #63-Ubuntu SMP PREEMPT Wed Sep
3 21:56:12 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux |
| Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/11984/console |


This message was automatically generated.

> HDFS client gets errors trying to to connect to IPv6 DataNode
> -------------------------------------------------------------
>
>                 Key: HDFS-8078
>                 URL: https://issues.apache.org/jira/browse/HDFS-8078
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs-client
>    Affects Versions: 2.6.0
>            Reporter: Nate Edel
>            Assignee: Nate Edel
>              Labels: BB2015-05-TBR, ipv6
>         Attachments: HDFS-8078.10.patch, HDFS-8078.11.patch, HDFS-8078.12.patch, HDFS-8078.13.patch,
HDFS-8078.14.patch, HDFS-8078.9.patch, dummy.patch
>
>
> 1st exception, on put:
> 15/03/23 18:43:18 WARN hdfs.DFSClient: DataStreamer Exception
> java.lang.IllegalArgumentException: Does not contain a valid host:port authority: 2401:db00:1010:70ba:face:0:8:0:50010
> 	at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:212)
> 	at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:164)
> 	at org.apache.hadoop.net.NetUtils.createSocketAddr(NetUtils.java:153)
> 	at org.apache.hadoop.hdfs.DFSOutputStream.createSocketForPipeline(DFSOutputStream.java:1607)
> 	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.createBlockOutputStream(DFSOutputStream.java:1408)
> 	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.nextBlockOutputStream(DFSOutputStream.java:1361)
> 	at org.apache.hadoop.hdfs.DFSOutputStream$DataStreamer.run(DFSOutputStream.java:588)
> Appears to actually stem from code in DataNodeID which assumes it's safe to append together
(ipaddr + ":" + port) -- which is OK for IPv4 and not OK for IPv6.  NetUtils.createSocketAddr(
) assembles a Java URI object, which requires the format proto://[2401:db00:1010:70ba:face:0:8:0]:50010
> Currently using InetAddress.getByName() to validate IPv6 (guava InetAddresses.forString
has been flaky) but could also use our own parsing. (From logging this, it seems like a low-enough
frequency call that the extra object creation shouldn't be problematic, and for me the slight
risk of passing in bad input that is not actually an IPv4 or IPv6 address and thus calling
an external DNS lookup is outweighed by getting the address normalized and avoiding rewriting
parsing.)
> Alternatively, sun.net.util.IPAddressUtil.isIPv6LiteralAddress()
> -------
> 2nd exception (on datanode)
> 15/04/13 13:18:07 ERROR datanode.DataNode: dev1903.prn1.facebook.com:50010:DataXceiver
error processing unknown operation  src: /2401:db00:20:7013:face:0:7:0:54152 dst: /2401:db00:11:d010:face:0:2f:0:50010
> java.io.EOFException
>         at java.io.DataInputStream.readShort(DataInputStream.java:315)
>         at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.readOp(Receiver.java:58)
>         at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:226)
>         at java.lang.Thread.run(Thread.java:745)
> Which also comes as client error "-get: 2401 is not an IP string literal."
> This one has existing parsing logic which needs to shift to the last colon rather than
the first.  Should also be a tiny bit faster by using lastIndexOf rather than split.  Could
alternatively use the techniques above.



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