Re: DML operations and transactions in Hive

https://cwiki.apache.org/confluence/display/Hive/Hive+Transactions describes this in detail Assuming all tables in the query are ACID tables, then reads are consistent. ACID is supported by MVCC architecture at the storage layer (ORC). Locking is at partition level. If one statement is trying t

Re: Utilities.copyTableJobPropertiesToConf

xcscxç m z ć El nov 6, 2015 7:47 PM, "Gabriel Balan" escribió: > Hello, > > May I please get a bit of help understanding the bigger picture for > Utilities.copyTableJobPropertiesToConf() >

Utilities.copyTableJobPropertiesToConf

Hello, May I please get a bit of help understanding the bigger picture for Utilities.copyTableJobPropertiesToConf() * before hive 0.13

Re: Cross join/cartesian product explanation

> Over the last few week I¹ve been trying to use cross joins/cartesian >products and was wondering why, exactly, this all gets sent to one >reducer. All I¹ve heard or read is that Hive can¹t/doesn¹t parallelize >the job. The hashcode of the shuffle key is 0, since you need to process every row a

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Cross join/cartesian product explanation

Hi all, Over the last few week I’ve been trying to use cross joins/cartesian products and was wondering why, exactly, this all gets sent to one reducer. All I’ve heard or read is that Hive can’t/doesn’t parallelize the job. Is there some code people can point me to? Does anyone have a workaroun

DML operations and transactions in Hive

Hi, I would like to understand a bit more about insert/update/select operations in Hive. I believe ORC table format offers the best performance and concurrency. Is ORC the best format for DML operations. What is the granularity of locks? Is it partition or row. Also how ACID properties implement

Re: How to set add jar jarpath within hive jdbc query?

Put jar in lib or on hdfs both works. And also indicates a local path on hiveserver host works, too. But, the path needs to under the user hive. p.s How to change the default user hive when I connect to hive server ? On Thu, Nov 5, 2015 at 10:33 PM, Chetna C wrote: > You can move your auxili