IMPALA-7043: HBase split failure should not fail dataload
IMPALA-7043: HBase split failure should not fail dataload

HBase splitting can fail due to changes in HBase code. It
is useful to still do tests even if HBase splitting failed.
As it is today, buildall.sh will abort if
create-load-data.sh's invocation of split-hbase.sh fails.
No tests run, even though the HBase splitting affects only
a small portion of our tests.

This changes create-load-data.sh to keep going with
dataload if HBase splitting fails. It outputs the same
errors to the log as it would before this change.
It adds a message to explain that it is ignoring
the failure and there may be related test failures.

Change-Id: I7497fe8c9f1655a34b2743462d8b7248eb94554e
Reviewed-on: http://gerrit.cloudera.org:8080/10437
Reviewed-by: Philip Zeyliger <3ba3974e96044dcde818e6310ed799abe10671d4@cloudera.com>
Tested-by: Impala Public Jenkins <039b6b20426ff68ebe492b3021890d8c8fd010c9@cloudera.com>

cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala,cloudera/Impala