ALTER TABLE CONCATENATE

[daniel sass]

Hi,

The CONCATENATE command working just fine for non-bucketing tables.

If MY_TABLE created with buckets and when I'm running (for example) the
command ALTER TABLE MY_TABLE PARTITION(D='2013-01-01') CONCATENATE - I get
following error:



"FAILED: SemanticException
org.apache.hadoop.hive.ql.parse.SemanticException: Merge can not perform on
bucketized partition/table"



Questions:

1. I'm running hive 0.12 ; does hive 0.13 will support it?

2. Any suggestion for workaround? How can I merge buckets files under
partition?



Thanks a lot!

Dsass

RE: DESCRIBE EXTENDED show numRows=0

[Daniel Sass]

Hi,
I’m using 12.0 version and seems that ANALYZE command doesn’t update the table 
level statistics while partitions level are just fine.
For example (after running the command ANALYZE TABLE T1 partition(date_prt) 
COMPUTE STATISTICS):

I get:
.
.
.
Partition db1.t1{date_prt=2014-01-26} stats: [num_files: 16, num_rows: 9030050, 
total_size: 51413507, raw_data_size: 477332702]
Table db1.t1 stats: [num_partitions: 0, num_files: 0, num_rows: 0, total_size: 
0, raw_data_size: 0]  <<<-- a problem
.
.
.

Is there any update on this issue?
Thanks Dsass


From: Navis류승우 [mailto:navis@nexr.com]
Sent: Monday, February 03, 2014 2:44 AM
To: user@hive.apache.org
Subject: Re: DESCRIBE EXTENDED show numRows=0

Could you check the task log?

For stat gathering, hive uses derby by default. If the jdbc driver for derby is 
not in auxlib, task cannot publish stats.

2014-01-30 Stephen Sprague mailto:sprag...@gmail.com>>:
the answer to this would seemingly be no.  i just tried it in hive v0.12.
numRows=0 before and numRows=0 after my running of "analyze table  
compute statistics"
other values are populated though just not numRows. I wonder why that is.
Cheers,
Stephen
{noformat}

parameters:{numPartitions=0, numFiles=420, last_modified_by=dwr, 
last_modified_time=1390986197, transient_lastDdlTime=1391060001, 
totalSize=10748060517, numRows=0, rawDataSize=0}, viewOriginalText:null, 
viewExpandedText:null, tableType:MANAGED_TABLE)
{noformat}

On Mon, Jan 27, 2014 at 3:52 AM, Lefty Leverenz 
mailto:leftylever...@gmail.com>> wrote:
Can the ANALYZE statement be used to gather statistics if hive.stats.autogather 
was 'false' when the data was loaded?  (See the wiki's Statistics in Hive doc:  
Existing 
Tables.)

-- Lefty

On Sun, Jan 26, 2014 at 8:01 PM, Navis류승우 
mailto:navis@nexr.com>> wrote:
If the data is loaded into table with insert clause with 
hive.stats.autogather=true, it will be updated. If it's not, it's zero (or -1 
sometimes).


2014-01-23 Haroon Muhammad 
mailto:muhammad.har...@live.com>>

Hi,
I have observed that DESCRIBE EXTENDED always shows number of rows to be zero 
despite the fact that the table has data. Is it a bug? Is it known ? Has anyone 
else also come across the same ?
Thanks,