Bharath Vissapragada 3f2f008ac4 IMPALA-3552: Make incremental stats max serialized size configurable ...

The fix "IMPALA-2648/IMPALA-2664" introduced a conservative limitation
on the maximum serialized size of incremental stats. As a side effect,
some users with very large tables are experiencing regressions
especially when they upgrade impala and the serialized size goes
beyond 200MB.

To mitigate the issue, the change introduces a new gflag,
'inc_stats_size_limit_bytes' to make the max serialized size
configurable, which allows impala users to specify their own maximum
serialized size. Default value for inc_stats_size_limit_bytes is
200MB.

The change introduces a TBackendGflags class to pass the gflags from
backend to the Frontend and the Catalog via thrift.  This also revamps
existing query options to use the TBackendConfig.

Change-Id: I33684725a61eabc67237503e61178305d37d3cb5
Reviewed-on: http://gerrit.cloudera.org:8080/4867
Reviewed-by: Bharath Vissapragada <bharathv@cloudera.com>
Tested-by: Internal Jenkins

2016-11-15 03:22:11 +00:00

..

CMakeLists.txt

IMPALA-3552: Make incremental stats max serialized size configurable

2016-11-15 03:22:11 +00:00