Regards, Pankaj.
There are good asynchronous clients for HBase:
StumbleUpon´s asynchbase
https://github.com/stumbleupon/asynchbase
Twitter´s Finagle:
https://github.com/twitter/finagle
On 10/30/2012 07:48 AM, Pankaj Misra wrote:
Dear All,
I am trying to build an asynch client (nonblocking mode) using thrift2
implementation of Hbase. My Hbase version in 0.94.1. I am calling
HbaseAsynchClient's mutateRow method with a callback implementation. I have
also started the thrift2 server in nonblocking mode listening on default HOST
and PORT.
TBinaryProtocol.Factory binProtoFactory=new TBinaryProtocol.Factory();
TAsyncClientManager clientManager=null;
TNonblockingSocket nonBlockingSocket=null;
try {
clientManager=new TAsyncClientManager();
} catch (IOException e) {
throw new RuntimeException(e);
}
try {
nonBlockingSocket=new TNonblockingSocket(HOST_NAME,PORT_NUMBER);
} catch (IOException e) {
throw new RuntimeException(e);
}
Hbase.AsyncClient client=new Hbase.AsyncClient(binProtoFactory,
clientManager, nonBlockingSocket);
client.mutateRow(ipdrTable, ByteBuffer.wrap(key), mutations,
mutationAttributes, new HBaseInsertAsyncHandler());
The handler code is as given below
class HBaseInsertAsyncHandler implements AsyncMethodCallback<mutateRow_call> {
public void onComplete(mutateRow_call response) {
System.out.println("Completed:"+response);
}
public void onError(Exception exception) {
System.out.println("Error:"+exception);
}
}
When I run this code, it returns with success from the call back handler,
Completed:org.apache.hadoop.hbase.thrift.generated.Hbase$AsyncClient$mutateRow_call@ffeef1
But I do not see any activity in the thrift logs and neither do I see the
records being inserted in hbase. I am not sure what could be the issue, and I
may be missing something here, for which I would request community's help. I
suspect I am not using it properly, would greatly appreciate your help.
Thanks and Regards
Pankaj Misra
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