Stephen Chu created HDFS-5513:
---------------------------------
Summary: CacheAdmin commands fail when using . as the path
Key: HDFS-5513
URL: https://issues.apache.org/jira/browse/HDFS-5513
Project: Hadoop HDFS
Issue Type: Bug
Components: tools
Affects Versions: 3.0.0
Reporter: Stephen Chu
Priority: Minor
The hdfs CLI commands generally accept "." as a path argument.
e.g.
{code}
hdfs dfs -rm .
hdfs dfsadmin -allowSnapshot .
{code}
I don't think it's very common to use the path "." but the CacheAdmin commands
will fail saying that it cannot create a Path from an empty string.
{code}
[schu@hdfs-c5-nfs ~]$ hdfs cacheadmin -removeDirectives -path .
Exception in thread "main" java.lang.IllegalArgumentException: Can not create a
Path from an empty string
at org.apache.hadoop.fs.Path.checkPathArg(Path.java:127)
at org.apache.hadoop.fs.Path.<init>(Path.java:184)
at
org.apache.hadoop.hdfs.protocol.PathBasedCacheDirective$Builder.<init>(PathBasedCacheDirective.java:66)
at
org.apache.hadoop.hdfs.DistributedFileSystem.listPathBasedCacheDirectives(DistributedFileSystem.java:1639)
at
org.apache.hadoop.hdfs.tools.CacheAdmin$RemovePathBasedCacheDirectivesCommand.run(CacheAdmin.java:365)
at org.apache.hadoop.hdfs.tools.CacheAdmin.run(CacheAdmin.java:82)
at org.apache.hadoop.hdfs.tools.CacheAdmin.main(CacheAdmin.java:87)
[schu@hdfs-c5-nfs ~]$ hdfs cacheadmin -addDirective -path . -pool schu
Exception in thread "main" java.lang.IllegalArgumentException: Can not create a
Path from an empty string
at org.apache.hadoop.fs.Path.checkPathArg(Path.java:127)
at org.apache.hadoop.fs.Path.<init>(Path.java:184)
at
org.apache.hadoop.hdfs.protocol.PathBasedCacheDirective$Builder.<init>(PathBasedCacheDirective.java:66)
at
org.apache.hadoop.hdfs.DistributedFileSystem.addPathBasedCacheDirective(DistributedFileSystem.java:1598)
at
org.apache.hadoop.hdfs.tools.CacheAdmin$AddPathBasedCacheDirectiveCommand.run(CacheAdmin.java:180)
at org.apache.hadoop.hdfs.tools.CacheAdmin.run(CacheAdmin.java:82)
at org.apache.hadoop.hdfs.tools.CacheAdmin.main(CacheAdmin.java:87)
{code}
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