[jira] [Created] (HDFS-8807) dfs.datanode.data.dir does not handle spaces between storageType and URI correctly

[Anu Engineer (JIRA)]

Anu Engineer created HDFS-8807:
----------------------------------

             Summary: dfs.datanode.data.dir does not handle spaces between 
storageType and URI correctly
                 Key: HDFS-8807
                 URL: https://issues.apache.org/jira/browse/HDFS-8807
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: HDFS
    Affects Versions: 2.8.0
            Reporter: Anu Engineer
            Assignee: Anu Engineer
             Fix For: 2.8.0


if you add a space between the storage type and 
file URI then datanodes fail during startup.

Here is an example of "mis-configration" that leads to datanode
failure.

{code}
<property>
    <name>dfs.datanode.data.dir</name>
    <value>
      [DISK] file://tmp/hadoop-aengineer/disk1/dfs/data
    </value>
  </property>
{code}

Here is the "fixed" version. Please *note* the lack of space between \[DISK\] 
and file URI
{code}
<property>
    <name>dfs.datanode.data.dir</name>
    <value>
      [DISK]file://tmp/hadoop-aengineer/disk1/dfs/data
    </value>
  </property>
{code}

we fail with a parsing error, here is the info from the datanode logs.

{code}
2015-07-22 13:34:36,812 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: 
Exception in secureMain
java.lang.IllegalArgumentException: java.net.URISyntaxException: Illegal 
character in scheme name at index 0:  file://tmp/hadoop-aengineer/disk1/dfs/data
        at org.apache.hadoop.fs.Path.initialize(Path.java:204)
        at org.apache.hadoop.fs.Path.<init>(Path.java:170)
        at 
org.apache.hadoop.hdfs.server.datanode.StorageLocation.parse(StorageLocation.java:97)
        at 
org.apache.hadoop.hdfs.server.datanode.DataNode.getStorageLocations(DataNode.java:2314)
        at 
org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2298)
        at 
org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2349)
        at 
org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2529)
        at 
org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2553)
Caused by: java.net.URISyntaxException: Illegal character in scheme name at 
index 0:  file://tmp/hadoop-aengineer/disk1/dfs/data
        at java.net.URI$Parser.fail(URI.java:2829)
        at java.net.URI$Parser.checkChars(URI.java:3002)
        at java.net.URI$Parser.checkChar(URI.java:3012)
        at java.net.URI$Parser.parse(URI.java:3028)
        at java.net.URI.<init>(URI.java:753)
        at org.apache.hadoop.fs.Path.initialize(Path.java:201)
        ... 7 more
{code}



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