Bryan Beaudreault created HBASE-28354:
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Summary: RegionSizeCalculator throws NPE when regions are in
transition
Key: HBASE-28354
URL: https://issues.apache.org/jira/browse/HBASE-28354
Project: HBase
Issue Type: Bug
Reporter: Bryan Beaudreault
When a region is in transition, it may briefly have a null ServerName in meta.
The RegionSizeCalculator calls RegionLocator.getAllRegionLocations() and does
not handle the possibility that a RegionLocation.getServerName() could be null.
The ServerName is eventually passed into an Admin call, which results in an NPE.
This has come up in other contexts. For example, taking a look at
getAllRegionLocations() impl, we have checks to ensure that we don't call null
server names. We need to similarly handle the possibility of nulls in
RegionSizeCalculator.
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