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[SQOOP-312] Support for hive dynamic partitions with SQOOP import - Sqoop - [issue]
...Currently in order to populate hive table dynamic partitions using Sqoop import we need to perform the following steps.1. Need to analyze the db table and identify the distinct values to be ...
http://issues.apache.org/jira/browse/SQOOP-312    Author: Bejoy KS, 2013-08-13, 06:44
Re: Bucketing external tables - Hive - [mail # user]
...Hi Sadu  When you use bucketed map join you need to ensure that 1) Both the tables are bucketed on the join columns 2)The number of buckets should be same or multiple of each other for ...
   Author: Bejoy KS, 2013-04-16, 15:13
[HIVE-3300] LOAD DATA INPATH fails if a hdfs file with same name is added to table - Hive - [issue]
...If we are loading data from local fs to hive tables using 'LOAD DATA LOCAL INPATH' and if a file with the same name exists in the table's location then the new file will be suffixed by *_cop...
http://issues.apache.org/jira/browse/HIVE-3300    Author: Bejoy KS, 2012-12-17, 11:34
[HIVE-2918] Hive Dynamic Partition Insert - move task not considering 'hive.exec.max.dynamic.partitions' from CLI - Hive - [issue]
...Dynamic Partition insert showing an error with the number of partitions created even after the default value of 'hive.exec.max.dynamic.partitions' is bumped high to 2000.Error Message:"Faile...
http://issues.apache.org/jira/browse/HIVE-2918    Author: Bejoy KS, 2012-12-07, 08:46
Re: pblm in joining two tables in hive..... - Hive - [mail # user]
...Hi  Do a Left outer join A to B and do a null check on B's columns.  SELECT A.* FROM A LEFT OUTER JOIN B ON (...) WHERE B.clmn IS NULL.   Regards Bejoy KS  Sent from hand...
   Author: Bejoy KS, 2012-11-23, 09:49
Re: Multiuser setup on Hive - Hive - [mail # user]
...Hi Austin  In hive currently you can have permissions only on the hdfs layer not on the metastore. The current hive metastore don't have multiuser permission support. Any user will be a...
   Author: Bejoy KS, 2012-11-22, 06:50
Re: fundamental doubt - Hadoop - [mail # user]
...Hi Jamal  It is performed at a frame work level map emits key value pairs and the framework collects and groups all the values corresponding to a key from all the map tasks. Now the red...
   Author: Bejoy KS, 2012-11-21, 20:03
[expand - 2 more] - Re: guessing number of reducers. - Hadoop - [mail # user]
...Hi Manoj  If you intend to calculate the number of reducers based on the input size, then in your driver class you should get the size of the input dir in hdfs and  say you intende...
   Author: Bejoy KS, 2012-11-21, 18:34
Re: Supplying a jar for a map-reduce job - MapReduce - [mail # user]
...Hi Pankaj  AFAIK You can do the same. Just provide the properties like mapper class, reducer class, input format, output format etc using -D option at run time.    Regards Bej...
   Author: Bejoy KS, 2012-11-21, 04:54
Re: number of reducers - MapReduce - [mail # user]
...Hi Sasha  By default the number or reducers are set to be 1. If you want more you need to specify it as  hadoop jar myJar.jar myClass -D mapred.reduce.tasks=20 ...   Regards B...
   Author: Bejoy KS, 2012-11-20, 20:09
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