Thomas: Thanks for your kindly help. I will have a try. :-) 2011/9/13 Thomas Jungblut <[email protected]>: > Okay. I have downloaded Hama-0.3.0-incubating here: > http://apache.linux-mirror.org//incubator/hama/0.3-incubating/hama-0.3.0-incubating.tar.gz > and Hadoop-0.20.2 here: > http://apache.lehtivihrea.org//hadoop/core/hadoop-0.20.2/hadoop-0.20.2.tar.gz > > They are both working out of the box with each other. Did you see the > tutorial here? http://wiki.apache.org/hama/GettingStarted > Maybe you messed up with the version like I did. > > 2011/9/13 Thomas Jungblut <[email protected]> > >> Oh I'm sorry, my symlink was named Hadoop 0.20.2, actually it was the >> append version ( 0.20-append-r1056497, r1056491 ) which should be compatible >> with HBase. >> That is my flaw. I test with the real 0.20.2 again. >> >> >> 2011/9/13 Thomas Jungblut <[email protected]> >> >>> Hi zhaoguo, >>> >>> officially we just support Hadoop 0.20.2 for Hama 0.3.0-incubating. >>> Every appending release of Hadoop e.G. 0.20.203 or 0.21.0 has changed >>> their RPC protocol. This is the reason why you got the version mismatch in >>> your header. >>> I'm pretty sure we build against 0.20.2. Although I get the same errors: >>> >>> org.apache.hadoop.ipc.RPC$VersionMismatch: Protocol >>>> org.apache.hadoop.hdfs.protocol.ClientProtocol version mismatch. (client = >>>> 41, server = 42) >>>> at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:364) >>>> at >>>> org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:106) >>>> at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:207) >>>> >>> >>> And in my lib directory lies a "hadoop-core-0.20.2.jar". Strange. >>> >>> Thanks for your observation, I'll take a deeper look into it and provide >>> you with a fix if I have one. >>> >>> >>> 2011/9/13 zhaoguo wang <[email protected]> >>> >>>> Hello everyone: >>>> >>>> I'm new to both HAMA and Hadoop. When I try to set up hama with hdfs >>>> on the same single node. I have the following problems: First I tried >>>> hadoop-0.20.203.0 >>>> with hama-0.3.0-incubating, when hama's bsp was setting up and tried >>>> to communicate >>>> with the namenode of HDFS. The connection is refused on the side of >>>> hama. >>>> Then I check the log of the HDFS, it has the following infomation: >>>> Incorrect header or version mismatch from 127.0.0.1:52772 got version >>>> 3 expected version 4. >>>> >>>> To avoid the mismatch problem, I also tried hadoop-0.20.2 and >>>> hadoop-0.21.0. >>>> The same problem happened again when I used hama with hadoop-0.20.2. >>>> >>>> When I use hadoop-0.21.0, the problem changed. >>>> The following exception is thrown in the log of hdfs instead of >>>> mismatch problem: >>>> >>>> 2011-09-13 14:37:24,264 INFO org.apache.hadoop.ipc.Server: IPC Server >>>> listener on 9000: readAndProcess threw exception java.io.IOException: >>>> Unable to read authentication method. Count of bytes read: 0 >>>> java.io.IOException: Unable to read authentication method >>>> at >>>> org.apache.hadoop.ipc.Server$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 >>>> >>> >>> >>> >>> -- >>> Thomas Jungblut >>> Berlin >>> >>> mobile: 0170-3081070 >>> >>> business: [email protected] >>> private: [email protected] >>> >> >> >> >> -- >> Thomas Jungblut >> Berlin >> >> mobile: 0170-3081070 >> >> business: [email protected] >> private: [email protected] >> > > > > -- > Thomas Jungblut > Berlin > > mobile: 0170-3081070 > > business: [email protected] > private: [email protected] >
-- 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
