hive-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Thulasi Ram Naidu Peddineni <thulasiram...@gmail.com>
Subject Reg: Map joins in hive
Date Tue, 27 Sep 2011 17:59:03 GMT
-----
Regards,
Thulasi Ram P




---------- Forwarded message ----------
From: Thulasi Ram Naidu Peddineni <thulasiram333@gmail.com>
Date: Tue, Sep 27, 2011 at 11:21 PM
Subject: Reg: Map joins in hive
To: dev@hive.apache.org, user@hive.apache.org


Hi,
 I have a huge table x (~150M records and ~5GB) with one partition
and another table (~200 records and <10KB). I want to join both these
tables and thought MapJoin is perfect optimization for this. However,
my job log says..

Total MapReduce jobs = 2
...
...

Mapred Local Task Succeeded . Convert the Join into MapJoin

Launching Job 1 out of 2

Number of reduce tasks is set to 0 since there's no reduce operator

and then it is stuck at this point of time for a long time. Can you
some explain what could be happening here ?


-----
Thanks,
Thulasi Ram P

Mime
View raw message