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967ed18407
Prior deflake attempt at IMPALA-12499 does not seem sufficient. There are still sporadic failures happening in test_hdfs_scanner_thread_non_reserved_bytes. This patch further attempt to deflake it by: - Injecting 100ms sleep every time scanner thread obtain new scan range. - Running it serially. - Skip it in dockerized environment. This patch also fix small comment mistakes in hdfs-scan-node.cc. Testing: - Loop and pass the test 100 times in local minicluster environment. Change-Id: I5715cf16c87ff0de51afd2fa778c5b591409d376 Reviewed-on: http://gerrit.cloudera.org:8080/20640 Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com> Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>