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https://issues.apache.org/jira/browse/HDFS-157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Koji Noguchi reopened HDFS-157:
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bq. Hairong just opened a better Jira. HADOOP:6732
This didn't change the memory footprint on the client side. Reopening.
> dfs client -ls/-lsr outofmemory when one directory contained 2 million files.
> -----------------------------------------------------------------------------
>
> Key: HDFS-157
> URL: https://issues.apache.org/jira/browse/HDFS-157
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Koji Noguchi
> Priority: Minor
>
> Heapsize was set to 1G.
> It'll be nice if dfs client doesn't require that much memory when listing the
> directory.
> Exception in thread "IPC Client connection to namenode/11.11.11.111:1111"
> java.lang.OutOfMemoryError: GC overhead limit exceeded
> at java.util.regex.Pattern.compile(Pattern.java:846)
> at java.lang.String.replace(String.java:2208)
> at org.apache.hadoop.fs.Path.normalizePath(Path.java:147)
> at org.apache.hadoop.fs.Path.initialize(Path.java:137)
> at org.apache.hadoop.fs.Path.<init>(Path.java:126)
> at org.apache.hadoop.dfs.DFSFileInfo.readFields(DFSFileInfo.java:141)
> at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:230)
> at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:166)
> at org.apache.hadoop.io.ObjectWritable.readObject(ObjectWritable.java:214)
> at org.apache.hadoop.io.ObjectWritable.readFields(ObjectWritable.java:61)
> at org.apache.hadoop.ipc.Client$Connection.run(Client.java:273)
> Exception in thread "main" java.lang.OutOfMemoryError: GC overhead limit
> exceeded
> at java.util.Arrays.copyOfRange(Arrays.java:3209)
> at java.lang.String.<init>(String.java:216)
> at java.lang.StringBuffer.toString(StringBuffer.java:585)
> at java.net.URI.toString(URI.java:1907)
> at java.net.URI.<init>(URI.java:732)
> at org.apache.hadoop.fs.Path.initialize(Path.java:137)
> at org.apache.hadoop.fs.Path.<init>(Path.java:126)
> at org.apache.hadoop.fs.Path.makeQualified(Path.java:296)
> at org.apache.hadoop.dfs.DfsPath.<init>(DfsPath.java:35)
> at
> org.apache.hadoop.dfs.DistributedFileSystem.listPaths(DistributedFileSystem.java:181)
> at org.apache.hadoop.fs.FsShell.ls(FsShell.java:405)
> at org.apache.hadoop.fs.FsShell.ls(FsShell.java:423)
> at org.apache.hadoop.fs.FsShell.ls(FsShell.java:423)
> at org.apache.hadoop.fs.FsShell.ls(FsShell.java:423)
> at org.apache.hadoop.fs.FsShell.ls(FsShell.java:399)
> at org.apache.hadoop.fs.FsShell.doall(FsShell.java:1054)
> at org.apache.hadoop.fs.FsShell.run(FsShell.java:1244)
> at org.apache.hadoop.util.ToolBase.doMain(ToolBase.java:187)
> at org.apache.hadoop.fs.FsShell.main(FsShell.java:1333)
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