Hi,
What is the difference between hints STREAMTABLE ,MAPJOIN .
Thanks,
Baahu
This is my understanding of both. Wait for the hive guru's to correct me if
i made any mistake
In Hive, when an inner join query happens the table at the last position on
the right streams its records to the reducers. This is the default
behavior.
So say, you have a query select blah blah from
Hi,
I use hive 0.11 with a five machine cluster. I am reading the property
hive.query.string from a custom RecordReader (used for reading external
tables).
If I first invoke a query like
select * from mytable where mycolumn='myvalue';
I get the correct query string in this property.
If I then
Thanks. I just got an Oozie Hive action set up to test on a single node
cluster and putting ADD JAR /path/to/hdfs/location in the hive script
worked. Hopefully I won't hit any issues when I try it on a multi-node
cluster.
On Mon, Dec 2, 2013 at 5:37 PM, Adam Kawa kawa.a...@gmail.com wrote:
Hmmm?
Maybe it is related to the fact, that a query:
select * from mytable limit 100;
does not start any MapReduce job. It is starts a reading operation from
HDFS (and a communication with MetaStore to know what is the schema and how
to parse the data using InputFormat and SerDe).
For example,
Yes, it seems related. I think the query string is not refreshed when hive
decides to run without a map reduce job. Problem is that I try to interact
with the query string to apply an early filter in the record reader. Any
other known way to detect that a map reduce job is not spawned so that I
Looks like a bug. I've booked this on
https://issues.apache.org/jira/browse/HIVE-5935.
2013/12/4 Adam Kawa kawa.a...@gmail.com
Maybe you can parse the output of EXPLAIN operator applied on your query
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Explain
or look for other
Can you try setting templeton.storage.root in webhcat-site.xml to a
directory that exists ?
On Mon, Dec 2, 2013 at 6:21 AM, Jonathan Hodges hodg...@gmail.com wrote:
Hi,
I have setup WebHCat that is bundled with Hive 0.11.0. I am able to kick of
map reduce jobs with the REST API
