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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-20277) [DOC] appendix with guidance on updating applications for HBase 2
Date Sat, 24 Mar 2018 04:31:00 GMT
Sean Busbey created HBASE-20277:
-----------------------------------

             Summary: [DOC] appendix with guidance on updating applications for HBase 2
                 Key: HBASE-20277
                 URL: https://issues.apache.org/jira/browse/HBASE-20277
             Project: HBase
          Issue Type: Sub-task
          Components: Client, documentation
    Affects Versions: 2.0.0
            Reporter: Sean Busbey


Feedback from [~mdrob] on HBASE-19158:

{quote}

Classes/Methods moved:
* HBASE-19425 (and subtasks) Put/Delete/Increment/Append
* HBASE-19627 (and subtasks) Cell & Impl
* HBASE-18978 (and subtasks) Async/Table
* HBASE-18805 (and subtasks) Async/Admin
* HBASE-14996 (and subtasks) Lots of misc changes
* HBASE-13197 (and subtasks) Connection
* HBASE-13844 KeyValue -> CellUtil
* Maybe HBASE-19950 is worth calling out? Not really an upgrade issue though, but I know the
old behavior of SCVF changed in a surprising way for the YARN ATS folks, when they were previously
relying on what ended up being a bug.

Could be mitigated by having a compatibility report, but would benefit from narrative messaging.

Almost definitely need a blanket reminder that some deprecated APIs went away.

{quote}

from @busbey on HBASE-19158

{quote}
{quote}
* Classes/Methods moved:
* Almost definitely need a blanket reminder that some deprecated APIs went away.
{quote}

My intention was for both of these to be handled by this blurb:

{quote}
+[[upgrade2.0.public.api]]
+.Multiple breaking changes to source and binary compatibility for client API
+The Java client API for HBase has a number of changes that break both source and binary compatibility
for details see the Compatibility Check Report for the release you'll be upgrading to.
+
+<!-- This would be a good place to link to an appendix on migrating applications -->
+
{quote}

I figure once we get an appendix that provides guidance on migrating an application from 1.x
to 2.x we can also link to it.
{quote}

Get an appendix in place and then update the upgrade section as needed to draw attention to
it.



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