Duo Zhang created HBASE-21100:
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             Summary: HBTU.waitUntilAllRegionsAssigned will count split/merged 
region and cause wait timeout
                 Key: HBASE-21100
                 URL: https://issues.apache.org/jira/browse/HBASE-21100
             Project: HBase
          Issue Type: Bug
            Reporter: Duo Zhang


In TestTruncateTableProcedure, we will call split and then wait until all 
regions are assigned. The code itself is a bit strange and should be 
reimplement with other another way, but it expose the problem in our 
HBTU.waitUntilAllRegionsAssigned method, that we will also count split region, 
and find that it is not OPEN and return false, which causes a wait timeout.

This is the log.

https://builds.apache.org/job/HBase-Flaky-Tests/job/master/143/artifact/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.master.procedure.TestTruncateTableProcedure-output.txt

Will open another issue to rewrite the test first, but I still think we need to 
open a issue to record this problem.



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