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[expand - 1 more] - Re: Behavior of Hive 2837: insert into external tables should not be allowed - Hive - [mail # dev]
...Thanks, Ashutosh and Ed.  Historically, I didn't have much reason choose managed over external tables or vice-versa since the semantics were very similar. I chose external because it al...
   Author: Mark Grover, 2012-06-01, 14:49
Re: confused on different behavior of Bucketized tables do not support INSERT INTO - Hive - [mail # user]
...Hi Bruce, It seems to me that your issue may be two-fold.  1) The JIRA that introduced "insert into " (https://issues.apache.or g/jira/browse/HIVE-306) in Hive 0.8 only works for non-bu...
   Author: Mark Grover, 2012-06-01, 04:26
Re: HIVE and S3 via EMR? - Hive - [mail # user]
...Good catch, Pedro!  Russell: Not sure how you can be using Hive 0.9 on EMR since EMR only supports upto Hive 0.7.1.  Check this for details: http://aws.amazon.com/elasticmapreduce/...
   Author: Mark Grover, 2012-05-30, 20:21
Re: user define data format - Hive - [mail # user]
...Hi Richard, What Bejoy said is correct. However, another way to get around it would be pre-process your data between  and  to not contain any newlines. Then, you should be able to ...
   Author: Mark Grover, 2012-05-22, 16:10
Re: Condition for doing a sort merge bucket map join - Hive - [mail # user]
...Hi Bruce, Instead of joining 7 tables in the query, can you please start off with 2 tables and see if that works? If it doesn't, feel free to paste your table definitions and join query alon...
   Author: Mark Grover, 2012-05-22, 15:43
Re: NaNs and Infinity support in HIVE? - Hive - [mail # user]
...I did a test for this.  If a NaN is inserted into a string column, the value is serialized as "Infinity" in HDFS. However, if it's inserted into an Integer column, it's serialized as 21...
   Author: Mark Grover, 2012-05-18, 01:50
Re: Multiple SerDe per table name - Hive - [mail # user]
...Hi Swarnim, What's your use case? If you use multiple SerDe's, when you are writing to the table, how would you want Hive to decide which one to use?  Mark  Mark Grover, Business I...
   Author: Mark Grover, 2012-05-17, 15:38
[expand - 1 more] - Re: Indexing in hive - Hive - [mail # user]
...Hi Ranjith, Here are the steps for using an index in Hive 0.7.1.  1) Create the index  CREATE INDEX x ON TABLE t(j)  AS 'org.apache.hadoop.hive.ql.index.compact.CompactIndexHa...
   Author: Mark Grover, 2012-05-17, 02:27
Re: What's the right data storage/representation? - Hive - [mail # user]
...Hi Jon, First off, processing the data from (say, Apache) logs in Hive and storing aggregates in a reporting server like you mentioned is a fairly common paradigm.  You have some large ...
   Author: Mark Grover, 2012-05-15, 19:44
[expand - 1 more] - Re: Managed vs external tables in hive - Hive - [mail # user]
...Ranjith, If the schema of the data changes, when using external tables, you can drop the table and re-create it on the same dataset taking care of the schema changes (hopefully, maintaining ...
   Author: Mark Grover, 2012-05-14, 13:40
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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