Hey guys,
having a test-infrastructure for Hadoop on ec2. The client sits usually outside
of ec2.
Using plain map-reduce on YARN everything works fine.
Using Tez i run into following exception:
INFO [2014-07-29 00:09:06.653] [MrPlanRunnerV2] (TezClient.java:507) - Failed
to retrieve AM Status via proxy
com.google.protobuf.ServiceException:
org.apache.hadoop.net.ConnectTimeoutException: Call From
ip-10-73-6-154.ec2.internal/10.73.6.154 to
ec2-54-81-245-144.compute-1.amazonaws.com:60914 failed on socket timeout
exception: org.apache.hadoop.net.ConnectTimeoutException: connect timed out;
For more details see: http:
//wiki.apache.org/hadoop/SocketTimeout
at
org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:216)
at com.sun.proxy.$Proxy116.getAMStatus(Unknown Source)
at
org.apache.tez.client.TezClient.getAppMasterStatus(TezClient.java:500)
at org.apache.tez.client.TezClient.waitTillReady(TezClient.java:586)
I could resolve the problem for Tez changing the hostname of the instances to
their public dns’. However, that is causing problems with other components.
Do you know of any place in Tez which is related to that ? Any tweak which
could make chaining the hostname superfluous ?
best
Johannes
