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Mike Drob commented on HBASE-19289: ----------------------------------- [~elserj] - let me see if I understand your proposed solution. # Introduce new flag to not fail on the StreamCapability flush/sync checks (but still print appropriate warnings) # Apply this flag to unit tests that don't use an underlying DFS cluster # Apply this flag to standalone clusters # Update documentation to include blatant caveats about data loss in standalone cluster That doesn't seem right to me. We have a bunch of tests that check for data correctness, that we're apparently running with a file system that does not offer the guarantees that we expect. This is like the difference between SloppyMath and StrictMath - one is fast; the other is accurate. Do we gain any confidence from running tests quickly, seeing them pass, and then discovering that we don't have the coverage we thought we did at a later date? > CommonFSUtils$StreamLacksCapabilityException: hflush when running test > against hadoop3 beta1 > -------------------------------------------------------------------------------------------- > > Key: HBASE-19289 > URL: https://issues.apache.org/jira/browse/HBASE-19289 > Project: HBase > Issue Type: Test > Reporter: Ted Yu > Assignee: Mike Drob > Attachments: 19289.v1.txt, 19289.v2.txt, HBASE-19289.patch > > > As of commit d8fb10c8329b19223c91d3cda6ef149382ad4ea0 , I encountered the > following exception when running unit test against hadoop3 beta1: > {code} > testRefreshStoreFiles(org.apache.hadoop.hbase.regionserver.TestHStore) Time > elapsed: 0.061 sec <<< ERROR! > java.io.IOException: cannot get log writer > at > org.apache.hadoop.hbase.regionserver.TestHStore.initHRegion(TestHStore.java:215) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:220) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:195) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:190) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:185) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:179) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:173) > at > org.apache.hadoop.hbase.regionserver.TestHStore.testRefreshStoreFiles(TestHStore.java:962) > Caused by: > org.apache.hadoop.hbase.util.CommonFSUtils$StreamLacksCapabilityException: > hflush > at > org.apache.hadoop.hbase.regionserver.TestHStore.initHRegion(TestHStore.java:215) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:220) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:195) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:190) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:185) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:179) > at > org.apache.hadoop.hbase.regionserver.TestHStore.init(TestHStore.java:173) > at > org.apache.hadoop.hbase.regionserver.TestHStore.testRefreshStoreFiles(TestHStore.java:962) > {code} -- This message was sent by Atlassian JIRA (v6.4.14#64029)