Hi Salih,
It looks like the Accumulo processes are trying to communicate with the
local filesystem instead of HDFS. Do you still have the output from
`accumulo init`?
Also, is it possible to share your accumulo-env.sh, accumulo-site.xml
and the output from `accumulo classpath`?
Thanks.
Salih Kardan wrote:
Hello everyone,
Sorry in the previous mail, I forgot to fill out subject line of mail.
Please ignore previous mail.
Currently I am testing Accumulo 1.6.1 with Hadoop 1.2.1 and Zookeeper
3.4.5 with 4 hadoop nodes. I gave a role to each node in hadoop cluster;
specifically
assume my hadoop nodes like this: hadoop1, hadoop2, hadoop3 and hadoop4.
The accumulo roles are distributed to hadoop nodes;
hadoop1 = accumulo master ( single zookeeper instance is also running on
this node)
hadoop2 = gc
hadoop3 = monitor
hadoop4 = tablet server + tracer
After I initialize accumulo with *"accumulo init"* command, I invoked
start_all.sh script from master machine. All services except tracer and
tablet server started working.
However on tablet server machine I see these logs :
2014-11-19 11:20:32,327 [zookeeper.ZooUtil] ERROR: unable obtain
instance id at file:/accumulo/instance_id
2014-11-19 11:20:32,328 [tserver.TabletServer] ERROR: Uncaught exception
in TabletServer.main, exiting
java.lang.RuntimeException: Accumulo not initialized, there is no
instance id at file:/accumulo/instance_id
at
org.apache.accumulo.core.zookeeper.ZooUtil.getInstanceIDFromHdfs(ZooUtil.java:62)
at
org.apache.accumulo.server.client.HdfsZooInstance._getInstanceID(HdfsZooInstance.java:132)
at
org.apache.accumulo.server.client.HdfsZooInstance.getInstanceID(HdfsZooInstance.java:116)
at
org.apache.accumulo.server.conf.ServerConfigurationFactory.<init>(ServerConfigurationFactory.java:113)
at
org.apache.accumulo.server.conf.ServerConfiguration.<init>(ServerConfiguration.java:79)
at
org.apache.accumulo.tserver.TabletServer.main(TabletServer.java:3668)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.accumulo.start.Main$1.run(Main.java:141)
at java.lang.Thread.run(Thread.java:745)
And the logs I see in tracer log file:
Thread "tracer" died Accumulo not initialized, there is no instance id
at file:/accumulo/instance_id
java.lang.RuntimeException: Accumulo not initialized, there is no
instance id at file:/accumulo/instance_id
at
org.apache.accumulo.core.zookeeper.ZooUtil.getInstanceIDFromHdfs(ZooUtil.java:62)
at
org.apache.accumulo.server.client.HdfsZooInstance._getInstanceID(HdfsZooInstance.java:132)
at
org.apache.accumulo.server.client.HdfsZooInstance.getInstanceID(HdfsZooInstance.java:116)
at
org.apache.accumulo.server.conf.ServerConfigurationFactory.<init>(ServerConfigurationFactory.java:113)
at
org.apache.accumulo.server.conf.ServerConfiguration.<init>(ServerConfiguration.java:79)
at org.apache.accumulo.tracer.TraceServer.main(TraceServer.java:290)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.apache.accumulo.start.Main$1.run(Main.java:141)
at java.lang.Thread.run(Thread.java:745)
I checked hdfs and it seems accumulo is initialized. Here is the output
of *"hadoop dfs -ls /accumulo/instance_id" *command*, *
Found 1 items
-rw-r--r-- 1 root supergroup 0 2014-11-19 11:19
/accumulo/instance_id/268acc40-e20b-4a35-8d8a-0e46e7859a0d
I googled the problem, some comments stating that the problem may occur
due to missing hadoop libs in classpath, but I checked classpath of
with *"accumulo classpath"* command, it also seems correct, both hadoop
and zookeeper libs listed in classspath.
Then I tried single node accumulo installation, that way all services
including tablet server seems working.
What can be the problem when I use multiple nodes? Any help is appreciated.
Thanks
