Re: can't copy between hdfs

Sun, 13 Apr 2014 06:45:25 -0700

For curiosity, I can copy a file from host1 to host2 with the copyFromLocal. I cannot do this with distcp. I think the problem is related to the 'distcp' command. Maybe it is a question of permissions I already set "<property> <name>dfs.permissions</name> <value>false</value> </property> 
" in the hdfs-site.xml and core-site. Any suggestion to fix this error?
WorkGroup0000$ hdfs dfs -copyFromLocal setup.py 'hdfs://WorkGroup0010:9000/' <<- this command works WorkGroup0000$ hadoop distcp hdfs://WorkGroup0000:9000/wiki hdfs://WorkGroup0010:9000/wiki <<- this command doesn'twork 

On 04/13/2014 11:43 AM, xeon wrote:
As far as I can see, the source host can't write to the destination host. This is a similar problem to the one described here (https://groups.google.com/a/cloudera.org/forum/#!topic/cdh-user/0nTALQjbrT0 ). But I can't find a way to fix this error. Any help to try to fix this? 

On 04/13/2014 11:08 AM, xeon wrote:

Hi,
I am trying to copy data between HDFS that are located away from each other, and when I run the distcp command, I get the errors below in the namenode and the datanode of the target hosts. What is happening?
The 2 mapreduce runtime are running in a VLAN. The host are physically distant, but they use the same IP range. 

Command:
hadoop distcp hdfs://WorkGroup0000:9000/wiki hdfs://WorkGroup0010:9000/wiki 

Namenode logs of the source host:
2014-04-13 10:01:24,213 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* allocateBlock: /tmp/hadoop-yarn/staging/root/.staging/job_1397327306299_0045/job.splitmetainfo. BP-1662111526-172.16.100.13-1397327293758 blk_-5400567409103494582_6969{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[172.16.100.15:50010|RBW]]} 2014-04-13 10:01:24,218 INFO BlockStateChange: BLOCK* addStoredBlock: blockMap updated: 172.16.100.15:50010 is added to blk_-5400567409103494582_6969{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[172.16.100.15:50010|RBW]]} size 0 2014-04-13 10:01:24,219 INFO org.apache.hadoop.hdfs.StateChange: DIR* completeFile: /tmp/hadoop-yarn/staging/root/.staging/job_1397327306299_0045/job.splitmetainfo is closed by DFSClient_NONMAPREDUCE_458023096_1 2014-04-13 10:01:24,320 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* allocateBlock: /tmp/hadoop-yarn/staging/root/.staging/job_1397327306299_0045/job.xml. BP-1662111526-172.16.100.13-1397327293758 blk_489660666766888075_6971{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[172.16.100.14:50010|RBW]]} 2014-04-13 10:01:24,328 INFO BlockStateChange: BLOCK* addStoredBlock: blockMap updated: 172.16.100.14:50010 is added to blk_489660666766888075_6971{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[172.16.100.14:50010|RBW]]} size 0 2014-04-13 10:01:24,329 INFO org.apache.hadoop.hdfs.StateChange: DIR* completeFile: /tmp/hadoop-yarn/staging/root/.staging/job_1397327306299_0045/job.xml is closed by DFSClient_NONMAPREDUCE_458023096_1 2014-04-13 10:01:24,389 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* allocateBlock: /tmp/hadoop-yarn/staging/root/.staging/job_1397327306299_0045/appTokens. BP-1662111526-172.16.100.13-1397327293758 blk_-5469411569413407886_6973{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[172.16.100.16:50010|RBW]]} 2014-04-13 10:01:24,396 INFO BlockStateChange: BLOCK* addStoredBlock: blockMap updated: 172.16.100.16:50010 is added to blk_-5469411569413407886_6973{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[172.16.100.16:50010|RBW]]} size 0 2014-04-13 10:01:24,397 INFO org.apache.hadoop.hdfs.StateChange: DIR* completeFile: /tmp/hadoop-yarn/staging/root/.staging/job_1397327306299_0045/appTokens is closed by DFSClient_NONMAPREDUCE_458023096_1 2014-04-13 10:01:26,904 INFO BlockStateChange: BLOCK* ask 172.16.100.14:50010 to replicate blk_8868060350766479646_6965 to datanode(s) 172.16.100.16:50010 172.16.100.15:50010 2014-04-13 10:01:27,932 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* allocateBlock: /tmp/hadoop-yarn/staging/root/.staging/job_1397327306299_0045/job_1397327306299_0045_1_conf.xml. BP-1662111526-172.16.100.13-1397327293758 blk_1012068924814169940_6976{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[172.16.100.14:50010|RBW]]} 2014-04-13 10:01:27,972 INFO BlockStateChange: BLOCK* addStoredBlock: blockMap updated: 172.16.100.14:50010 is added to blk_1012068924814169940_6976{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[172.16.100.14:50010|RBW]]} size 0 2014-04-13 10:01:27,973 INFO org.apache.hadoop.hdfs.StateChange: DIR* completeFile: /tmp/hadoop-yarn/staging/root/.staging/job_1397327306299_0045/job_1397327306299_0045_1_conf.xml is closed by DFSClient_NONMAPREDUCE_-1471236856_1 2014-04-13 10:01:28,603 INFO BlockStateChange: BLOCK* addStoredBlock: blockMap updated: 172.16.100.16:50010 is added to blk_8868060350766479646_6965 size 80053 2014-04-13 10:01:28,605 INFO BlockStateChange: BLOCK* addStoredBlock: blockMap updated: 172.16.100.15:50010 is added to blk_8868060350766479646_6965 size 80053 



Datanode logs of the source host:
2014-04-13 10:01:24,234 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving BP-1662111526-172.16.100.13-1397327293758:blk_-4909667885926150941_6959 src: /172.16.100.13:51419 dest: /172.16.100.16:50010 2014-04-13 10:01:24,248 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /172.16.100.13:51419, dest: /172.16.100.16:50010, bytes: 233, op: HDFS_WRITE, cliID: DFSClient_NONMAPREDUCE_458023096_1, offset: 0, srvID: DS-1825202225-172.16.100.16-50010-1397327304669, blockid: BP-1662111526-172.16.100.13-1397327293758:blk_-4909667885926150941_6959, duration: 12489490 2014-04-13 10:01:24,248 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder: BP-1662111526-172.16.100.13-1397327293758:blk_-4909667885926150941_6959, type=LAST_IN_PIPELINE, downstreams=0:[] terminating 2014-04-13 10:01:24,282 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /172.16.100.16:50010, dest: /172.16.100.13:51420, bytes: 237, op: HDFS_READ, cliID: DFSClient_NONMAPREDUCE_458023096_1, offset: 0, srvID: DS-1825202225-172.16.100.16-50010-1397327304669, blockid: BP-1662111526-172.16.100.13-1397327293758:blk_-4909667885926150941_6959, duration: 78237 2014-04-13 10:01:24,319 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /172.16.100.16:50010, dest: /172.16.100.13:51420, bytes: 237, op: HDFS_READ, cliID: DFSClient_NONMAPREDUCE_458023096_1, offset: 0, srvID: DS-1825202225-172.16.100.16-50010-1397327304669, blockid: BP-1662111526-172.16.100.13-1397327293758:blk_-4909667885926150941_6959, duration: 98085 2014-04-13 10:01:24,868 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /172.16.100.16:50010, dest: /172.16.100.13:51420, bytes: 237, op: HDFS_READ, cliID: DFSClient_NONMAPREDUCE_458023096_1, offset: 0, srvID: DS-1825202225-172.16.100.16-50010-1397327304669, blockid: BP-1662111526-172.16.100.13-1397327293758:blk_-4909667885926150941_6959, duration: 68844 2014-04-13 10:01:24,902 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving BP-1662111526-172.16.100.13-1397327293758:blk_7617264601876797381_6967 src: /172.16.100.14:43154 dest: /172.16.100.16:50010 2014-04-13 10:01:24,907 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /172.16.100.14:43154, dest: /172.16.100.16:50010, bytes: 142, op: HDFS_WRITE, cliID: DFSClient_NONMAPREDUCE_458023096_1, offset: 0, srvID: DS-1825202225-172.16.100.16-50010-1397327304669, blockid: BP-1662111526-172.16.100.13-1397327293758:blk_7617264601876797381_6967, duration: 2647953 2014-04-13 10:01:24,907 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder: BP-1662111526-172.16.100.13-1397327293758:blk_7617264601876797381_6967, type=LAST_IN_PIPELINE, downstreams=0:[] terminating 2014-04-13 10:01:25,094 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving BP-1662111526-172.16.100.13-1397327293758:blk_-5469411569413407886_6973 src: /172.16.100.13:51429 dest: /172.16.100.16:50010 2014-04-13 10:01:25,098 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /172.16.100.13:51429, dest: /172.16.100.16:50010, bytes: 7, op: HDFS_WRITE, cliID: DFSClient_NONMAPREDUCE_458023096_1, offset: 0, srvID: DS-1825202225-172.16.100.16-50010-1397327304669, blockid: BP-1662111526-172.16.100.13-1397327293758:blk_-5469411569413407886_6973, duration: 3098167 2014-04-13 10:01:25,098 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder: BP-1662111526-172.16.100.13-1397327293758:blk_-5469411569413407886_6973, type=LAST_IN_PIPELINE, downstreams=0:[] terminating 2014-04-13 10:01:25,434 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /172.16.100.16:50010, dest: /172.16.100.14:43158, bytes: 11, op: HDFS_READ, cliID: DFSClient_NONMAPREDUCE_-746601717_397829, offset: 0, srvID: DS-1825202225-172.16.100.16-50010-1397327304669, blockid: BP-1662111526-172.16.100.13-1397327293758:blk_-5469411569413407886_6973, duration: 75148 2014-04-13 10:01:29,294 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving BP-1662111526-172.16.100.13-1397327293758:blk_8868060350766479646_6965 src: /172.16.100.14:43167 dest: /172.16.100.16:50010 2014-04-13 10:01:29,304 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: Received BP-1662111526-172.16.100.13-1397327293758:blk_8868060350766479646_6965 src: /172.16.100.14:43167 dest: /172.16.100.16:50010 of size 80053 2014-04-13 10:01:30,686 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /172.16.100.16:50010, dest: /172.16.100.16:46021, bytes: 80681, op: HDFS_READ, cliID: DFSClient_NONMAPREDUCE_113851557_419414, offset: 0, srvID: DS-1825202225-172.16.100.16-50010-1397327304669, blockid: BP-1662111526-172.16.100.13-1397327293758:blk_8868060350766479646_6965, duration: 129669 

Namenode logs of the target host:
2014-04-13 09:48:23,471 INFO org.apache.hadoop.hdfs.StateChange: BLOCK* allocateBlock: /wiki/.distcp.tmp.attempt_1397327306299_0044_m_000008_0. BP-862979082-172.16.100.5-1397327020274 blk_-5593655825051572228_6376{blockUCState=UNDER_CONSTRUCTION, primaryNodeIndex=-1, replicas=[ReplicaUnderConstruction[172.16.100.8:50010|RBW]]} 


Datanode logs of the target host:
2014-04-13 09:48:43,789 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder: BP-862979082-172.16.100.5-1397327020274:blk_3331673758913146011_6363, type=LAST_IN_PIPELINE, downstreams=0:[]: Thread is interrupted. 2014-04-13 09:48:43,789 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder: BP-862979082-172.16.100.5-1397327020274:blk_3331673758913146011_6363, type=LAST_IN_PIPELINE, downstreams=0:[] terminating 2014-04-13 09:48:43,789 INFO org.apache.hadoop.hdfs.server.datanode.DataNode: opWriteBlock BP-862979082-172.16.100.5-1397327020274:blk_3331673758913146011_6363 received exception java.net.SocketTimeoutException: 60000 millis timeout while waiting for channel to be ready for read. ch : java.nio.channels.SocketChannel[connected local=/172.16.100.8:50010 remote=/172.16.100.14:44724] 2014-04-13 09:48:43,789 ERROR org.apache.hadoop.hdfs.server.datanode.DataNode: WorkGroup0013:50010:DataXceiver error processing WRITE_BLOCK operation src: /172.16.100.14:44724 dest: /172.16.100.8:50010 java.net.SocketTimeoutException: 60000 millis timeout while waiting for channel to be ready for read. ch : java.nio.channels.SocketChannel[connected local=/172.16.100.8:50010 remote=/172.16.100.14:44724] at org.apache.hadoop.net.SocketIOWithTimeout.doIO(SocketIOWithTimeout.java:164) at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:159) at org.apache.hadoop.net.SocketInputStream.read(SocketInputStream.java:129) 
    at java.io.FilterInputStream.read(FilterInputStream.java:116)
    at java.io.BufferedInputStream.read1(BufferedInputStream.java:256)
    at java.io.BufferedInputStream.read(BufferedInputStream.java:317)
    at java.io.DataInputStream.read(DataInputStream.java:132)
    at org.apache.hadoop.io.IOUtils.readFully(IOUtils.java:192)


core-site.xml and hdfs-site.xml of the source host:

# cat ~/Programs/hadoop/etc/hadoop/core-site.xml
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->
<configuration>
<property> <name>fs.default.name</name> <value>hdfs://172.16.100.13:9000</value> </property> <property> <name>hadoop.tmp.dir</name> <value>/tmp/hadoop-temp</value> </property> 
<property><name>hadoop.proxyuser.root.hosts</name><value>*</value></property>
<property><name>hadoop.proxyuser.root.groups</name><value>*</value></property>
<property> <name>dfs.permissions</name> <value>false</value> </property> 
</configuration>
# cat ~/Programs/hadoop/etc/hadoop/hdfs-site.xml
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->
<configuration>
<property> <name>dfs.replication</name> <value>1</value> </property> <property> <name>dfs.permissions</name> <value>false</value> </property> <property> <name>dfs.name.dir</name> <value>/tmp/data/dfs/name/</value> </property> <property> <name>dfs.data.dir</name> <value>/tmp/data/dfs/data/</value> </property> <property> <name>dfs.webhdfs.enabled</name> <value>true</value> </property> 
</configuration>



core-site.xml and hdfs-site.xml of the target host:

# cat Programs/hadoop/etc/hadoop/core-site.xml
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->
<configuration>
<property> <name>fs.default.name</name> <value>hdfs://172.16.100.5:9000</value> </property> <property> <name>hadoop.tmp.dir</name> <value>/tmp/hadoop-temp</value> </property> 
<property><name>hadoop.proxyuser.root.hosts</name><value>*</value></property>
<property><name>hadoop.proxyuser.root.groups</name><value>*</value></property>
<property> <name>dfs.permissions</name> <value>false</value> </property> 
</configuration>
# cat Programs/hadoop/etc/hadoop/hdfs-site.xml
<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->
<configuration>
<property> <name>dfs.replication</name> <value>1</value> </property> <property> <name>dfs.permissions</name> <value>false</value> </property> <property> <name>dfs.name.dir</name> <value>/tmp/data/dfs/name/</value> </property> <property> <name>dfs.data.dir</name> <value>/tmp/data/dfs/data/</value> </property> <property> <name>dfs.webhdfs.enabled</name> <value>true</value> </property> 
</configuration>


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Thanks,


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