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Posted to mapreduce-issues@hadoop.apache.org by "Karthik Kambatla (JIRA)" <ji...@apache.org> on 2014/02/03 17:46:14 UTC
[jira] [Commented] (MAPREDUCE-4548) M/R jobs can not access S3 if
Kerberos is enabled
[ https://issues.apache.org/jira/browse/MAPREDUCE-4548?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13889617#comment-13889617 ]
Karthik Kambatla commented on MAPREDUCE-4548:
---------------------------------------------
[~mdeferran] - want to take a stab at this, post a patch?
> M/R jobs can not access S3 if Kerberos is enabled
> -------------------------------------------------
>
> Key: MAPREDUCE-4548
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4548
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.0.0-alpha
> Environment: hadoop-1.0.0;MIT kerberos;java 1.6.0_26
> CDH4.3.0(hadoop 2.0.0-alpha);MIT kerberos;java 1.6.0_26
> Reporter: Manuel DE FERRAN
>
> With Kerberos enabled, any job that is taking as input or output s3 files fails.
> It can be easily reproduced with wordcount shipped in hadoop-examples.jar and a public S3 file:
> {code}
> /opt/hadoop/bin/hadoop --config /opt/hadoop/conf/ jar /opt/hadoop/hadoop-examples-1.0.0.jar wordcount s3n://ubikodpublic/test out01
> {code}
> returns:
> {code}
> 12/08/10 12:40:19 INFO hdfs.DFSClient: Created HDFS_DELEGATION_TOKEN token 192 for hadoop on 10.85.151.233:9000
> 12/08/10 12:40:19 INFO security.TokenCache: Got dt for hdfs://aws04.machine.com:9000/mapred/staging/hadoop/.staging/job_201208101229_0004;uri=10.85.151.233:9000;t.service=10.85.151.233:9000
> 12/08/10 12:40:19 INFO mapred.JobClient: Cleaning up the staging area hdfs://aws04.machine.com:9000/mapred/staging/hadoop/.staging/job_201208101229_0004
> java.lang.IllegalArgumentException: java.net.UnknownHostException: ubikodpublic
> at org.apache.hadoop.security.SecurityUtil.buildTokenService(SecurityUtil.java:293)
> at org.apache.hadoop.security.SecurityUtil.buildDTServiceName(SecurityUtil.java:317)
> at org.apache.hadoop.fs.FileSystem.getCanonicalServiceName(FileSystem.java:189)
> at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodesInternal(TokenCache.java:92)
> at org.apache.hadoop.mapreduce.security.TokenCache.obtainTokensForNamenodes(TokenCache.java:79)
> at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.listStatus(FileInputFormat.java:197)
> at org.apache.hadoop.mapreduce.lib.input.FileInputFormat.getSplits(FileInputFormat.java:252)
> <SNIP>
> {code}
> This patch seems to fix it.
> {code}
> Index: core/org/apache/hadoop/security/SecurityUtil.java
> ===================================================================
> --- core/org/apache/hadoop/security/SecurityUtil.java (révision 1305278)
> +++ core/org/apache/hadoop/security/SecurityUtil.java (copie de travail)
> @@ -313,6 +313,9 @@
> if (authority == null || authority.isEmpty()) {
> return null;
> }
> + if (uri.getScheme().equals("s3n") || uri.getScheme().equals("s3")) {
> + return null;
> + }
> InetSocketAddress addr = NetUtils.createSocketAddr(authority, defPort);
> return buildTokenService(addr).toString();
> }
> {code}
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