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https://issues.apache.org/jira/browse/HDFS-10216?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15212151#comment-15212151
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John Zhuge commented on HDFS-10216:
-----------------------------------
Did hit the exception twice on 2 different nodes when running {{hadoop distcp
-update -diff s1 s2 d1 d2}} initially.
> distcp -diff relative path exception
> ------------------------------------
>
> Key: HDFS-10216
> URL: https://issues.apache.org/jira/browse/HDFS-10216
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: distcp
> Affects Versions: 2.6.0
> Reporter: John Zhuge
> Assignee: John Zhuge
> Priority: Critical
>
> Got this exception when running {{distcp -diff}} with relative paths:
> {code}
> $ hadoop distcp -update -diff s1 s2 d1 d2
> 16/03/25 09:45:40 INFO tools.DistCp: Input Options:
> DistCpOptions{atomicCommit=false, syncFolder=true, deleteMissing=false,
> ignoreFailures=false, maxMaps=20, sslConfigurationFile='null',
> copyStrategy='uniformsize', sourceFileListing=null, sourcePaths=[d1],
> targetPath=d2, targetPathExists=true, preserveRawXattrs=false,
> filtersFile='null'}
> 16/03/25 09:45:40 INFO client.RMProxy: Connecting to ResourceManager at
> jzhuge-balancer-1.vpc.cloudera.com/172.26.21.70:8032
> 16/03/25 09:45:41 ERROR tools.DistCp: Exception encountered
> java.lang.IllegalArgumentException: java.net.URISyntaxException: Relative
> path in absolute URI:
> hdfs://jzhuge-balancer-1.vpc.cloudera.com:8020./d1/.snapshot/s2
> at org.apache.hadoop.fs.Path.initialize(Path.java:206)
> at org.apache.hadoop.fs.Path.<init>(Path.java:197)
> at
> org.apache.hadoop.tools.SimpleCopyListing.getPathWithSchemeAndAuthority(SimpleCopyListing.java:193)
> at
> org.apache.hadoop.tools.SimpleCopyListing.addToFileListing(SimpleCopyListing.java:202)
> at
> org.apache.hadoop.tools.SimpleCopyListing.doBuildListingWithSnapshotDiff(SimpleCopyListing.java:243)
> at
> org.apache.hadoop.tools.SimpleCopyListing.doBuildListing(SimpleCopyListing.java:172)
> at org.apache.hadoop.tools.CopyListing.buildListing(CopyListing.java:86)
> at
> org.apache.hadoop.tools.DistCp.createInputFileListingWithDiff(DistCp.java:388)
> at org.apache.hadoop.tools.DistCp.execute(DistCp.java:164)
> at org.apache.hadoop.tools.DistCp.run(DistCp.java:123)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
> at org.apache.hadoop.tools.DistCp.main(DistCp.java:436)
> Caused by: java.net.URISyntaxException: Relative path in absolute URI:
> hdfs://jzhuge-balancer-1.vpc.cloudera.com:8020./d1/.snapshot/s2
> at java.net.URI.checkPath(URI.java:1804)
> at java.net.URI.<init>(URI.java:752)
> at org.apache.hadoop.fs.Path.initialize(Path.java:203)
> ... 11 more
> {code}
> But theses commands worked:
> * Absolute path: {{hadoop distcp -update -diff s1 s2 /user/systest/d1
> /user/systest/d2}}
> * No {{-diff}}: {{hadoop distcp -update d1 d2}}
> However, everything was fine when I ran {{hadoop distcp -update -diff s1 s2
> d1 d2}} again. I am not sure the problem only exists with option {{-diff}}.
> Trying to reproduce.
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