HConnectionManager.testTableOnlineState will get into infinite loop if more
than one .META. region
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Key: HBASE-1852
URL: https://issues.apache.org/jira/browse/HBASE-1852
Project: Hadoop HBase
Issue Type: Bug
Components: client
Affects Versions: 0.20.0
Environment: OSX/Linux
Reporter: Cosmin Lehene
Fix For: 0.20.1
Create 3 tables (preferably on a clean cluster to avoid other potential issues)
Split .META.
>From the master web inteface try to click on the first table - the page will
>not load and refreshing the main page will show lots of requests.
HBaseAdmin.testTableOnlineState will get into an infinite loop if .META. has
more than one region. This method should probably use a regular scanner and an
iterator.
I guess this issue would also happen with a single .META. region if rrs =
getRegionServerWithRetries(s) would get an UnknownScannerException (from a
scanner lease expiration on the region server), but I haven't double checked
this.
I attached a java method that you can use as a reference to reproduce the
behavior. However, since it calls split() on .META. and that is async, you
might have to run it twice and check that .META. actually splitted before
getting into the infinite loop.
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