Allow regions to split around scanners
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Key: HBASE-1050
URL: https://issues.apache.org/jira/browse/HBASE-1050
Project: Hadoop HBase
Issue Type: Improvement
Components: client, regionserver
Reporter: Andrew Purtell
We have a number of scanners iterating over a table that also sees a lot of
constant write activity. If the scans are too frequent we will suppress
splitting. At a lull then a number of splits happen all at once, occasionally
overwhelming DFS and causing file corruption.
I wonder how much work it would be to split regions around scanners. Rather
than wait for scanner leases to expire, suspend/block the scanner, split the
table, and then negotiate with the client to continue.
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