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Re: Migration of metastore tables from mysql to oracle. - Hive - [mail # user]
...First question, Why are u migrating to Oracle ? Since u never store data on Hive Metastore MYSQL is a great choice. I have done a MYSQL to MYSQL transfer From the source DB mysql dump, it sh...
   Author: Sanjay Subramanian, 2014-10-21, 21:24
Re: select * from table and select column from table in hive - Hive - [mail # user]
...One way to debug is to put bash in actionsay you have a data file in hdfs (/data/rockers/rockers.csv) that looks like cust_num,cust_name,instrument1,paul,bass2,john,rhythm3,ringo,drums4,geor...
   Author: Sanjay Subramanian, 2014-10-21, 21:19
Re: Optimize hive external tables with serde - Hive - [mail # user]
...1. The gzip files are not splittable, so gzip itself will make the queries slower.2. As a reference for JSON serdes , here is a example from my blog http://bigdatalatte.wordpress.com/2014/08...
   Author: Sanjay Subramanian, 2014-10-21, 21:12
Re: Weird Error on Inserting in Table [ORC, MESOS, HIVE] - Hive - [mail # user]
...hi I faced a similar situation in my dev cluster CDH distribution 5.1.3See the thread details with log files  https://groups.google.com/a/cloudera.org/forum/#!mydiscussions/scm-users/MpcpHj5...
   Author: Sanjay Subramanian, 2014-10-07, 19:05
Re: Storing result of a query in a variable - Hive - [mail # user]
...Add  -e option./hive -e --hiveconf MY_VAR =`cat /tmp/result/000000_0`;But u could use the following hdfs command as wellMY_VAR=$(hdfs dfs -cat /tmp/result/000000_0)thankssanjay______________...
   Author: Sanjay Subramanian, 2014-06-02, 21:03
Hadoop summit San Jose 5/3/14 - 5/5/14 - Hive - [mail # user]
...hi guys I am going to attend the 3 day hadoop summit in San Jose tomorrow. Looking fwd to the Hive sessions.Hope to see many of u there.regardssanjay ...
   Author: Sanjay Subramanian, 2014-06-02, 20:57
Re: problem with delimiters (control A) - Hive - [mail # user]
...Hi Jack Since u already have your data with columns separated by CtrlA then u need to define the HIVE table as follows (by default Hive will assume CtrlA as column delimiter)create table if ...
   Author: Sanjay Subramanian, 2014-05-29, 23:38
Re: Finding Max of a column without using any Aggregation functions - Hive - [mail # user]
...Thanks For the sake of this question I wanted to avoid all order by and limit syntax 😄. It's more of a challenge question RegardsSanjay Sent from my iPhone ...
   Author: Sanjay Subramanian, 2014-04-23, 14:49
Re: create table question - Hive - [mail # user]
...For exampleif ur name node was hadoop_name_nodeIP:8020(verify this thru your browser http://hadoop_name_nodeIP:50070)Modified Create Table==================CREATE EXTERNAL TABLE states(abbre...
   Author: Sanjay Subramanian, 2014-04-23, 04:32
Re: Query hangs at 99.97 % for one reducer in Hive - Hive - [mail # user]
...Even 500 reducers sounds a high number but I don't know the deatils of your cluster. Can u provide some detailsHow many nodes in cluster Hive version Which distribution (Hortonworks, Apache,...
   Author: Sanjay Subramanian, 2014-03-03, 00:43
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