Ted Yu created HBASE-20081:
------------------------------
Summary: TestDisableTableProcedure sometimes hung in
MiniHBaseCluster#waitUntilShutDown
Key: HBASE-20081
URL: https://issues.apache.org/jira/browse/HBASE-20081
Project: HBase
Issue Type: Test
Reporter: Ted Yu
https://builds.apache.org/job/HBase-2.0-hadoop3-tests/lastCompletedBuild/org.apache.hbase$hbase-server/testReport/org.apache.hadoop.hbase.master.procedure/TestDisableTableProcedure/org_apache_hadoop_hbase_master_procedure_TestDisableTableProcedure/
was one recent occurrence.
I noticed two things in test output:
{code}
2018-02-25 18:12:45,053 WARN [Time-limited test-EventThread]
master.RegionServerTracker(136): asf912.gq1.ygridcore.net,45649,1519582305777
is not online or isn't known to the master.The latter could be caused by a DNS
misconfiguration.
{code}
Since DNS misconfiguration was very unlikely on Apache Jenkins nodes, the above
should not have been logged.
{code}
2018-02-25 18:16:51,531 WARN [master/asf912:0.Chore.1]
master.CatalogJanitor(127): Failed scan of catalog table
java.io.IOException: connection is closed
at
org.apache.hadoop.hbase.MetaTableAccessor.getMetaHTable(MetaTableAccessor.java:263)
at
org.apache.hadoop.hbase.MetaTableAccessor.scanMeta(MetaTableAccessor.java:761)
at
org.apache.hadoop.hbase.MetaTableAccessor.scanMeta(MetaTableAccessor.java:680)
at
org.apache.hadoop.hbase.MetaTableAccessor.scanMetaForTableRegions(MetaTableAccessor.java:675)
at
org.apache.hadoop.hbase.master.CatalogJanitor.getMergedRegionsAndSplitParents(CatalogJanitor.java:188)
at
org.apache.hadoop.hbase.master.CatalogJanitor.getMergedRegionsAndSplitParents(CatalogJanitor.java:140)
at
org.apache.hadoop.hbase.master.CatalogJanitor.scan(CatalogJanitor.java:246)
at
org.apache.hadoop.hbase.master.CatalogJanitor.chore(CatalogJanitor.java:119)
at org.apache.hadoop.hbase.ScheduledChore.run(ScheduledChore.java:186)
{code}
The above was possibly related to the lost region server.
I searched test output of successful run where none of the above two can be
seen.
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