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Re: Create Partitioned Table w/ Partition= Substring of Raw Data - Hive - [mail # user]
...Hi Dan, What Gabi is right.  To solve your problem, you could have a non-partitioned table on the raw data and run a Hive query that reads this raw data and inserts it into a partitione...
   Author: Mark Grover, 2012-03-22, 13:33
Re: order by having no effect?! - Hive - [mail # user]
...Hi Keith, Hive has 2 sort of (well, not really) similar clauses: sort by and order by. For order by to work, you need to guarantee 1 reducer.  Read up more here: https://cwiki.apache.or...
   Author: Mark Grover, 2012-03-13, 20:57
Re: order by date - Hive - [mail # user]
...Hi Keith, You should also consider writing you own UDF that takes in the date in "American" format and spits out a lexicographical string. That way you don't have to modify your base data, j...
   Author: Mark Grover, 2012-03-13, 18:29
Re: Error - Hive - [mail # user]
...Hi Keith, This error is typically encountered when your metastore (that stores the metadata related to Hive tables e.g. name of columns, name of tables, etc. etc.) is not correctly set up. &...
   Author: Mark Grover, 2012-03-09, 21:21
Re: HIVE and S3 folders - Hive - [mail # user]
...Hi Balaji, The Hive/Hadoop installation that comes with EMR is Amazon specific which has some additional patches that make s3 paths as recognizable as HDFS paths.  However, if you are u...
   Author: Mark Grover, 2012-03-07, 17:56
Amazon EMR Best Practices for Hive metastore - Hive - [mail # user]
...Hi all, I am trying to get an idea of what people do for setting up Hive metastore when using Amazon EMR.  For those of you using Amazon EMR:  1) Do you have a dedicated RDS instan...
   Author: Mark Grover, 2012-03-07, 02:54
Re: how to split query result into several smaller tables without creating temp table?? - Hive - [mail # user]
...Hi Wei, In query 1, it's invalid to requestbegintime in the select list if it's not in the group by clause. There doesn't seem to be a group by clause there. Is that the right query?  M...
   Author: Mark Grover, 2012-03-06, 17:11
Re: better partitioning strategy in hive - Hive - [mail # user]
...Sorry about the dealyed response, RK.  Here is what I think: 1) first of all why hive is not able to even submit the job? Is it taking for ever to query the list pf partitions from the ...
   Author: Mark Grover, 2012-03-02, 16:20
Re: Where clause and bucketized table - Hive - [mail # user]
...Hi Michael, To add to Bejoy's answer:  As far as I understand, the hashing function used in bucketing is not persistently stored, so as per your example (SELECT * from T where user_id =...
   Author: Mark Grover, 2012-03-02, 14:54
Re: help with compression and index - Hive - [mail # user]
...Hi Robert, As per https://issues.apache.org/jira/browse/HIVE-1644, Hive 0.8 introduces automatic accessing of indexes. That might come in handy too!  Mark  Mark Grover, Business In...
   Author: Mark Grover, 2012-02-21, 22:03
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB