sunhelly edited a comment on pull request #2728:
URL: https://github.com/apache/hbase/pull/2728#issuecomment-738601802
Oh, the method `balance()` used
`if (serverManager.**areDeadServersInProgress**()) {
LOG.debug("Not running balancer because processing dead
regionserver(s): {}",
serverManager.getDeadServers());
return false;
}
`
So in the UT, if the SCP has not been finished, the balancer will
break.Though it wait for the same host port RS to be online by
`TEST_UTIL.getMiniHBaseCluster().startRegionServerAndWait(60000)`, master deals
them as two servers...
As a result, `assertRegionsInGroup` can fail after `MASTER.balance()`, as we
saw in the test results...
@Apache9 @yuqi1129
This is directly relevant to the patch of HBASE-25282.
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