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3 Commits

Author SHA1 Message Date
Ippokratis Pandis
e1ae5fe95a IMPALA-1068: COMPUTE STATS should place -1 in #NULLs 
With IMPALA-1033 we disabled the counting of the number of NULLs in each column,
and that gave a 2x speed-up in the computation. But erroneously the value 0 was
being placed in the number of NULLs, instead of the correct -1 that indicates
'unknown'.

Change-Id: Ib882eb2a87e7e2469f606081cb2881461b441a45
Reviewed-on: http://gerrit.ent.cloudera.com:8080/3377
Reviewed-by: Ippokratis Pandis <ipandis@cloudera.com>
Tested-by: jenkins
Reviewed-on: http://gerrit.ent.cloudera.com:8080/3378
 2014-07-07 15:13:25 -07:00
Nong Li
a7beb12540 [CDH5] Fix column stats for decimal. 
Change-Id: I72b31f6431bf6259e759fd290200fd1a755f82c6
 2014-06-20 23:03:06 -07:00
Skye Wanderman-Milne
1cc628d32d IMPALA-950: Skip computing stats for decimal columns. 
This patch also adds a mechanism to return analysis warnings to
client, which is used to log skipped decimal columns.

Change-Id: I30c246044a68ec8861cd5bed072bd54e65a079e6
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2822
Reviewed-by: Skye Wanderman-Milne <skye@cloudera.com>
Tested-by: jenkins
(cherry picked from commit fc77422acef7e6f93fdeb5448309414b905f0725)
Reviewed-on: http://gerrit.ent.cloudera.com:8080/2984
 2014-06-11 19:16:34 -07:00