Apache Drill failed to connect to HDFS - hadoop

Question

This is my hdfs version:
NameNode '10.207.78.21:38234'
Started: Mon Feb 02 19:16:43 CST 2015
Version: 1.0.4, r1393290
This is the config of drill file system plugin:
{
"type": "file",
"enabled": true,
"connection": "hdfs://10.207.78.21:38234",
"config": null,
"workspaces": {
"root": {
"location": "/",
"writable": false,
"defaultInputFormat": null
},
"tmp": {
"location": "/tmp",
"writable": true,
"defaultInputFormat": null
}
},
"formats": ...
This is my test data:
bash-4.3$ ./hadoop fs -cat /test
{"key": "value"}
And drill failed executing a query in embedded mode:
0: jdbc:drill:zk=local> SELECT * FROM rpmp.`/test` LIMIT 20;
Error: SYSTEM ERROR: EOFException
[Error Id: fd784c1a-8353-430a-9ae3-08a5154755fe on xxx.com:31010]
(org.apache.drill.exec.work.foreman.ForemanException) Unexpected exception during fragment initialization: Failed to create schema tree: End of File Exception between local host is: "xxx.com/10.95.112.80"; destination host is: "yyy.com":38234; : java.io.EOFException; For more details see: http://wiki.apache.org/hadoop/EOFException
org.apache.drill.exec.work.foreman.Foreman.run():262
java.util.concurrent.ThreadPoolExecutor.runWorker():1145
java.util.concurrent.ThreadPoolExecutor$Worker.run():615
java.lang.Thread.run():745
Caused By (org.apache.drill.common.exceptions.DrillRuntimeException) Failed to create schema tree: End of File Exception between local host is: "xxx.com/10.95.112.80"; destination host is: "yyy.com":38234; : java.io.EOFException; For more details see: http://wiki.apache.org/hadoop/EOFException
org.apache.drill.exec.ops.QueryContext.getRootSchema():169
org.apache.drill.exec.ops.QueryContext.getRootSchema():151
...