Empty rpc_address prevents running MapReduce job outside a cluster
------------------------------------------------------------------

                 Key: CASSANDRA-3811
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-3811
             Project: Cassandra
          Issue Type: Bug
          Components: Hadoop
    Affects Versions: 0.8.9
         Environment: Debian Stable,
Cassandra 0.8.9,
Java(TM) SE Runtime Environment (build 1.6.0_26-b03),
Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode)
            Reporter: Patrik Modesto


Setting rpc_address to empty to make Cassandra listen on all network 
intefaceces breaks running mapredude job from outside the cluster. The jobs 
wont even start, showing these messages:

{noformat}
12/01/26 11:15:21 DEBUG  hadoop.ColumnFamilyInputFormat: failed
connect to endpoint 0.0.0.0
java.io.IOException: unable to connect to server
       at 
org.apache.cassandra.hadoop.ConfigHelper.createConnection(ConfigHelper.java:389)
       at 
org.apache.cassandra.hadoop.ColumnFamilyInputFormat.getSubSplits(ColumnFamilyInputFormat.java:224)
       at 
org.apache.cassandra.hadoop.ColumnFamilyInputFormat.access$200(ColumnFamilyInputFormat.java:73)
       at 
org.apache.cassandra.hadoop.ColumnFamilyInputFormat$SplitCallable.call(ColumnFamilyInputFormat.java:193)
       at 
org.apache.cassandra.hadoop.ColumnFamilyInputFormat$SplitCallable.call(ColumnFamilyInputFormat.java:178)
       at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
       at java.util.concurrent.FutureTask.run(FutureTask.java:138)
       at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
       at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
       at java.lang.Thread.run(Thread.java:662)
Caused by: org.apache.thrift.transport.TTransportException:
java.net.ConnectException: Connection refused
       at org.apache.thrift.transport.TSocket.open(TSocket.java:183)
       at 
org.apache.thrift.transport.TFramedTransport.open(TFramedTransport.java:81)
       at 
org.apache.cassandra.hadoop.ConfigHelper.createConnection(ConfigHelper.java:385)
       ... 9 more
Caused by: java.net.ConnectException: Connection refused
       at java.net.PlainSocketImpl.socketConnect(Native Method)
       at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
       at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:211)
       at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
       at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
       at java.net.Socket.connect(Socket.java:529)
       at org.apache.thrift.transport.TSocket.open(TSocket.java:178)
       ... 11 more

...

Caused by: java.util.concurrent.ExecutionException:
java.io.IOException: failed connecting to all endpoints
10.0.18.129,10.0.18.99,10.0.18.98
       at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
       at java.util.concurrent.FutureTask.get(FutureTask.java:83)
       at 
org.apache.cassandra.hadoop.ColumnFamilyInputFormat.getSplits(ColumnFamilyInputFormat.java:156)
       ... 19 more
Caused by: java.io.IOException: failed connecting to all endpoints
10.0.18.129,10.0.18.99,10.0.18.98
       at 
org.apache.cassandra.hadoop.ColumnFamilyInputFormat.getSubSplits(ColumnFamilyInputFormat.java:241)
       at 
org.apache.cassandra.hadoop.ColumnFamilyInputFormat.access$200(ColumnFamilyInputFormat.java:73)
       at 
org.apache.cassandra.hadoop.ColumnFamilyInputFormat$SplitCallable.call(ColumnFamilyInputFormat.java:193)
       at 
org.apache.cassandra.hadoop.ColumnFamilyInputFormat$SplitCallable.call(ColumnFamilyInputFormat.java:178)
       at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
       at java.util.concurrent.FutureTask.run(FutureTask.java:138)
       at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
       at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
       at java.lang.Thread.run(Thread.java:662)
{noformat}

Describe ring retunrs:

{noformat}
describe_ring returns:
endpoints: 10.0.18.129,10.0.18.99,10.0.18.98
rpc_endpoints: 0.0.0.0,0.0.0.0,0.0.0.0
{noformat}

[Michael 
Frisch|http://www.mail-archive.com/user@cassandra.apache.org/msg20180.html] 
found possible bug in the Cassandra source:

{quote}
If the code in the 0.8 branch is reflective of what is actually included in 
Cassandra 0.8.9 (here: 
http://svn.apache.org/repos/asf/cassandra/branches/cassandra-0.8/src/java/org/apache/cassandra/hadoop/ColumnFamilyInputFormat.java)
 then the problem is that line 202 is doing an == comparison on strings.  The 
correct way to compare would be endpoint_address.equals("0.0.0.0") instead.

- Mike
{quote}

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