Hi Avery,
You are right. I just though it'd be better if this message appeared in the
exception thrown by the GraphMapper, since this is the top one you see in
the stack. This would make it easier to find out what's going on as opposed
to have to search the stack trace. I think if you run a hadoop job and an
exception is thrown, in the console you see only the top of the stack
trace, not all of it. And then you have to look into the hadoop logs.
Dionysis.
On Thu, Mar 29, 2012 at 4:11 AM, Avery Ching wrote:
> Dionysis,
>
> I'm a little confused. The below message seems to explain the problem with
>
>
> Input path does not exist: hdfs://localhost:9000/x
>
>
> Am I missing something?
>
> Avery
>
>
> On 3/27/12 4:04 AM, Dionysis Logothetis wrote:
>
>> Hi all,
>>
>> I was running one of the example apps and I accidentally entered the
>> wrong input, so I ended up getting an exception from GraphMapper. But
>> I think the actual cause of the exception (directory missing) is not
>> propagated properly, which makes debugging a bit more difficult.
>> Perhaps the generateInputSplits() method should include the type of
>> exception in the message?
>>
>> Below I'm pasting the messages printed:
>>
>>
>>
>> 2012-03-27 12:50:03,925 FATAL org.apache.giraph.graph.**GraphMapper:
>> uncaughtException: OverrideExceptionHandler on thread
>> org.apache.giraph.graph.**MasterThread, msg = generateInputSplits: Got
>> IOException, exiting...
>> java.lang.**IllegalStateException: generateInputSplits: Got IOException
>>at org.apache.giraph.graph.**BspServiceMaster.**
>> generateInputSplits(**BspServiceMaster.java:249)
>>at org.apache.giraph.graph.**BspServiceMaster.**createInputSplits(
>> **BspServiceMaster.java:506)
>>at org.apache.giraph.graph.**MasterThread.run(MasterThread.**
>> java:98)
>> Caused by: org.apache.hadoop.mapreduce.**lib.input.**
>> InvalidInputException:
>> Input path does not exist: hdfs://localhost:9000/x
>>at org.apache.hadoop.mapreduce.**lib.input.FileInputFormat.**
>> listStatus(FileInputFormat.**java:231)
>>at org.apache.hadoop.mapreduce.**lib.input.FileInputFormat.**
>> getSplits(FileInputFormat.**java:248)
>>at org.apache.giraph.lib.**TextVertexInputFormat.**getSplits(**
>> TextVertexInputFormat.java:**120)
>>at org.apache.giraph.graph.**BspServiceMaster.**
>> generateInputSplits(**BspServiceMaster.java:229)
>>... 2 more
>> 2012-03-27 12:50:03,941 WARN org.apache.giraph.zk.**ZooKeeperManager:
>> onlineZooKeeperServers: Forced a shutdown hook kill of the ZooKeeper
>> process.
>>
>>
>
