Devaraj Das created HBASE-13036:
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Summary: Meta scanner should use its own threadpool
Key: HBASE-13036
URL: https://issues.apache.org/jira/browse/HBASE-13036
Project: HBase
Issue Type: Bug
Reporter: Devaraj Das
Assignee: Devaraj Das
Currently, during region location lookups, the meta is scanned and for this the
scanner submits a request to the thread pool of the table in question.
Sometimes, it might happen that many scan requests are simultaneously submitted
on the table - let's say 256, and this is the max size of the thread pool. Each
of these scan requests would in turn submit meta scan requests on the same
thread pool, but they will be in the queue. The meta scans will not happen and
the original table scans would lock up. The meta scans should use a different
thread pool.
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