Hello everyone:
I'm new to both HAMA and Hadoop. When I try to set up hama with hdfs
on the same single node. I have the following problems: First I tried
hadoop-0.20.203.0
with hama-0.3.0-incubating, when hama's bsp was setting up and tried
to communicate
with the namenode of HDFS. The connection is refused on the side of hama.
Then I check the log of the HDFS, it has the following infomation:
Incorrect header or version mismatch from 127.0.0.1:52772 got version
3 expected version 4.
To avoid the mismatch problem, I also tried hadoop-0.20.2 and hadoop-0.21.0.
The same problem happened again when I used hama with hadoop-0.20.2.
When I use hadoop-0.21.0, the problem changed.
The following exception is thrown in the log of hdfs instead of
mismatch problem:
2011-09-13 14:37:24,264 INFO org.apache.hadoop.ipc.Server: IPC Server
listener on 9000: readAndProcess threw exception java.io.IOException:
Unable to read authentication method. Count of bytes read: 0
java.io.IOException: Unable to read authentication method
at
org.apache.hadoop.ipc.Server$Connection.readAndProcess(Server.java:1079)
at org.apache.hadoop.ipc.Server$Listener.doRead(Server.java:525)
at org.apache.hadoop.ipc.Server$Listener$Reader.run(Server.java:332)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:636)
I have no idea, what happened. Anyone can give me some suggestions?
--
Zhaoguo Wang, Parallel Processing Institute, Fudan University
Address: Room 320, Software Building, 825 Zhangheng Road, Shanghai, China
[email protected]
http://ppi.fudan.edu.cn/zhaoguo_wang
