[Impala-ASF-CR] IMPALA-10553: External Frontend CTAS support

["John Sherman (Code Review)" <ge...@cloudera.org>]

Hello Thomas Tauber-Marshall, Kurt Deschler, Joe McDonnell, Impala Public Jenkins, 

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/17145

to look at the new patch set (#7).

Change subject: IMPALA-10553: External Frontend CTAS support
......................................................................

IMPALA-10553: External Frontend CTAS support

- Adds the concept of an external staging dir to HdfsTableSink
  - This allows an external to specify the destination of the
  sink
  - When this is set, the external frontend is responsible for
  for moving and managing the results
  - Any DDL related operations are assumed to be handled by
  the external frontend
  - External frontends may optionally supply a partition
  depth which acts as a hint to skip a certain number of
  partitions while creating directories for partitions. This
  is for when the external frontend has pre-created a
  certain number of the directories in staging (usually the
  static portion of a partition specification)/
- Modifies delta/base naming to include 0 prefix padding to
  match Hive for dynamic partitioning detection
- External frontends are responsible for doing authorization
  checks against the staging directory and it is assumed the
  external frontend service is not exposed directly to users.

Co-authored-by: Kurt Deschler <kd...@cloudera.com>

Change-Id: Iae0ea4a832d8281c563427d0d7da1623bfce437b
Reviewed-by: Kurt Deschler <kd...@cloudera.com>
---
M be/src/exec/hdfs-table-sink.cc
M be/src/exec/hdfs-table-sink.h
M common/thrift/DataSinks.thrift
M fe/src/main/java/org/apache/impala/planner/HdfsTableSink.java
M fe/src/main/java/org/apache/impala/service/Frontend.java
5 files changed, 123 insertions(+), 18 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/45/17145/7
-- 
To view, visit http://gerrit.cloudera.org:8080/17145
To unsubscribe, visit http://gerrit.cloudera.org:8080/settings

Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Iae0ea4a832d8281c563427d0d7da1623bfce437b
Gerrit-Change-Number: 17145
Gerrit-PatchSet: 7
Gerrit-Owner: John Sherman <jf...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <im...@cloudera.com>
Gerrit-Reviewer: Joe McDonnell <jo...@cloudera.com>
Gerrit-Reviewer: John Sherman <jf...@cloudera.com>
Gerrit-Reviewer: Kurt Deschler <kd...@cloudera.com>
Gerrit-Reviewer: Thomas Tauber-Marshall <tm...@cloudera.com>