[Impala-CR](cdh5-2.5.0_5.7.0) IMPALA-2982: lazy initialization of HBase connection

["Tim Armstrong (Code Review)" <ge...@cloudera.org>]

Hello Sailesh Mukil,

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

    http://gerrit.cloudera.org:8080/2345

to look at the new patch set (#6).

Change subject: IMPALA-2982: lazy initialization of HBase connection
......................................................................

IMPALA-2982: lazy initialization of HBase connection

We shouldn't initialize a HBase connection if Impala will be run on a
cluster without Hbase. This started to bite us with a change to ZK or
HBase that resulted in periodic log messages when a bad HBase connection
was created. This patch changes the logic to only initialize the
question on demand, e.g. when a query is run against a HBase table.

Change-Id: I405f5cbfc62dd4a4aeb6f4019cac358376478884
---
M be/src/runtime/hbase-table-factory.cc
M be/src/runtime/hbase-table-factory.h
M be/src/service/impalad-main.cc
M be/src/testutil/mini-impala-cluster.cc
4 files changed, 40 insertions(+), 32 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/45/2345/6
-- 
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I405f5cbfc62dd4a4aeb6f4019cac358376478884
Gerrit-PatchSet: 6
Gerrit-Project: Impala
Gerrit-Branch: cdh5-2.5.0_5.7.0
Gerrit-Owner: Tim Armstrong <ta...@cloudera.com>
Gerrit-Reviewer: Marcel Kornacker <ma...@cloudera.com>
Gerrit-Reviewer: Sailesh Mukil <sa...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <ta...@cloudera.com>