question Flume in Archives of Support Questions (Read Only)

Flume

tnarayanarao2277 — Fri, 08 Aug 2014 05:17:52 GMT

Hi,

when i start the flume-ng i am getting the below error,

at java.lang.Thread.run(Thread.java:662)

2014-08-04 17:54:50,417 WARN hdfs.HDFSEventSink: HDFS IO error

org.apache.hadoop.ipc.RemoteException: java.io.IOException: File /logs/prod/jboss/2014/08/04/web07.prod.hs18.lan.1407154543459.tmp could only be replicated to 0 nodes, instead of 1

at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getAdditionalBlock(FSNamesystem.java:1637)

at org.apache.hadoop.hdfs.server.namenode.NameNode.addBlock(NameNode.java:757)

at sun.reflect.GeneratedMethodAccessor11.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:578)

at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1393)

at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1389)

at java.security.AccessController.doPrivileged(Native Method)

at javax.security.auth.Subject.doAs(Subject.java:396)

at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1136)

at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1387)

how can we fix the problem?

-Thankyou

Re: Flume

Gouthamand — Tue, 12 Aug 2014 18:59:45 GMT

This means that Namenode does not have available datanode to write. This could because of varity of reasons. Please check the logs.

Re: Flume

tnarayanarao2277 — Wed, 13 Aug 2014 04:46:16 GMT

i gone through the logs and i come to know that this is purely HDFS issue not flume,

so i fix it as follows:

step1:

stop all the services

Step2:

started name node

then when am trying to start the data nodes on the 3 servers,one of the server throwig the error message

/var/log/ ----No such file/directory

/var/run --No such file/directory

But these files are existing so i check the permissions on those two differ from second server to third server

So given the permission to those directories to be in sink

and then started all the services then flume working fine,

thats it.

-Thankyou