stack created HBASE-16761:
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Summary: Migrate existing protobuf2.5.0 Coprocessor Endpoints (and
servers-side hbase) to protobuf3.
Key: HBASE-16761
URL: https://issues.apache.org/jira/browse/HBASE-16761
Project: HBase
Issue Type: Task
Components: Coprocessors
Affects Versions: 2.0.0
Reporter: stack
Priority: Critical
HBase bundles seven or eight coprocessors. These Coprocessor Endpoints (CPEPs)
depend currently on protobuf 2.5 and reference protobuf classes at
com.google.protobuf.* rather than at the internal relocated location of
org.apache.hadoop.hbase.shaded.com.google.protobuf.
This is issue is about moving our CPEPs to protobuf3.
I could just replace the protobuf library we depend on making it pb3 but that
would break CPEPs that were not shipped as part of hbase core when we install
hbase-2.0.0. Over in HBASE-15638 Shade protobuf we did a bunch of work to
ensure CPEPs keep working across the upgrade to hbase-2.0.0 so I suggest we
just leave our core CPEPs at pb2.5 for now. Rather, lets have a deprecation
cycle where we deprecate pb2.5 on the hbase server-side (somehow) for
hbase-2.0.0 and then remove pb2.5 in hbase-3.0.0 (or 2.1 or something).
Would appreciate input on this one. Let me mark this a 2.0.0 critical so it
gets some attention before we finish up the 2.0.0 release.
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