Lars Hofhansl created PHOENIX-6671:
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Summary: Avoid ShortCirtuation Coprocessor Connection with HBase
2.x
Key: PHOENIX-6671
URL: https://issues.apache.org/jira/browse/PHOENIX-6671
Project: Phoenix
Issue Type: Bug
Reporter: Lars Hofhansl
See PHOENIX-6501, PHOENIX-6458, and HBASE-26812.
HBase's ShortCircuit Connection are fundamentally broken in HBase 2. We might
be able to fix it there, but with all the work the RPC handlers perform now
(closing scanning, resolving current user, etc), I doubt we'll get that 100%
right. HBase 3 has removed this functionality.
Even with HBase, which does not have the async protobuf code, I could hardly
see any performance improvement from circumventing the RPC stack in case the
target of a Get or Scan is local. Even in the most ideal conditions where
everything is local, there was improvement outside of noise.
I suggest we do not use ShortCircuited Connections.
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