Re: java.lang.NoClassDefFoundError: com/jayway/jsonpath/PathUtil

2013-03-10 Thread john smith
Hi, It clearly is a classpath issue! When you do a select * from tab , it works because HIve just fetches the data from HDFS using a FetchTask and doesn't start any MR job (It probably uses json jar in your local hive lib directory to deserialize and limit the rows to 5 and hence not raising

Re: Hive Reducers hanging - interesting problem - skew ?

2011-12-06 Thread john smith
- Treasury Today's Adam Smith Awards 2009. - Original Message - From: john smith js1987.sm...@gmail.com To: user@hive.apache.org Sent: Monday, December 5, 2011 4:38:14 PM Subject: Hive Reducers hanging - interesting problem - skew ? Hi list, I am trying to run a Join query on my 10 node

Attaching YourKit profiler with Hive

2011-12-04 Thread john smith
Hi folks, Can we get a shared license key for yourkit and use it with Hive project? The wiki page has no information about this. Can any dev help me in this regard? Thanks, jS

Profiling Hive / Metrics

2011-11-16 Thread john smith
Hey devs, My Hive reducers are running for too long. I wan't to profile Hive and collect metrics so as to find where most of the time is spent in execution. Can any one tell me where to start ? Are any profilers attached to Hive by default? Any help is appreciated. Thanks, jS

Re: hive runs slowly

2011-10-21 Thread john smith
Hi list, I am also facing the same problem. My reducers hang at this position and it takes hours to complete a single reduce task. Can any hive guru help us out with this issue. Thanks, jS 2011/10/21 bangbig lizhongliangg...@163.com HI all, HIVE runs too slowly when it is doing such

Re: hive runs slowly

2011-10-21 Thread john smith
, Edward Capriolo edlinuxg...@gmail.comwrote: On Fri, Oct 21, 2011 at 10:21 AM, john smith js1987.sm...@gmail.comwrote: Hi Edward, Thanks for replying. I have been using the query select a,b from a,b where a.id=b.id . According to my knowledge of Hive, it reads data of both A and B and emits

Re: Reducer hanging ( swapping? )

2011-09-22 Thread john smith
: 2GB for a task tracker? Here are some possible thoughts. Compress map output. Change mapred.reduce.slowstart.completed.maps By the way I see no swapping. Anything interesting from the task tracker log? System log? Raj From: john smith js1987.sm

Running Hive from Eclipse

2011-08-11 Thread john smith
Hi folks, I am trying to run Hive from eclipse. I've set it up correctly and it is building the jars and stuff. However I face execeptions when I try to run hive queries like show tables etc. There has been a discussion on this in the mailing list previously but there was no solution provided.

Re: Running Hive from Eclipse

2011-08-11 Thread john smith
with log4j props but I wonder why this is happening. THanks On Fri, Aug 12, 2011 at 2:12 AM, Carl Steinbach c...@cloudera.com wrote: Hi John, Can you please include the error messages/exceptions that you're encountering? Thanks. Carl On Thu, Aug 11, 2011 at 1:40 PM, john smith js1987.sm

Re: Running Hive from Eclipse

2011-08-11 Thread john smith
Hi, See in the line that log4j props is not in found .. I added Hive_conf dir to the classpath while running and now I get this trace .. http://pastebin.com/vXs98aZ5 I am completely clueless ! Thanks JS On Fri, Aug 12, 2011 at 9:54 AM, john smith js1987.sm...@gmail.com wrote: Hi Carl