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After loading data, we wait for HDFS to replicate all of the blocks appropriately. If this takes too long, we restart HDFS. However, HBase can fail if HDFS is restarted and HBase is unable to write its logs. In general, there is no real reason to keep HBase and the other minicluster components running while restarting HDFS. This changes the HDFS health check to restart the whole minicluster and Impala rather than just HDFS. Testing: - Tested with a modified version that always does the restart in the HDFS health check and verified that the tests pass Change-Id: I58ffe301708c78c26ee61aa754a06f46c224c6e2 Reviewed-on: http://gerrit.cloudera.org:8080/10665 Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>