[jira] [Created] (HBASE-28809) Client always send flush requests twice when flush procedure is disabled

["guluo (Jira)" <ji...@apache.org>]

guluo created HBASE-28809:
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             Summary: Client always send flush requests twice when flush procedure is disabled
                 Key: HBASE-28809
                 URL: https://issues.apache.org/jira/browse/HBASE-28809
             Project: HBase
          Issue Type: Improvement
          Components: Client
    Affects Versions: 2.6.0, 4.0.0-alpha-1
         Environment: hbase 2.6.0

centos7
            Reporter: guluo
            Assignee: guluo


When hbase disable flush procedure at server side, whether flush procedure is diabled or not at clien side, client always sends flush requests twice.

In current hbase, There are four situations about flush request:
1. Both server and client enables flush Procedure, Client only sends a flush request by flush procedure.
2. Server disabled flush procedure and client enables flush procedurce, Client sends a flush request by flush procedure, after failure ,it will sends a flush request by old flush implementation
3. Server enables flush procedure and client disables flush procedure, Client only send a flush request by flush procedure
4. Both server and client disables flush Procedure, Client alwalys sends a flush request by flush procedure at first, after failure ,it will sends a flush request by old flush implementation 

 

The situation 1/2 is no problem.
For situation 3, I think client should only send a flush request by old flush implementation instead of flush procedure
For situation 4, I think client should only send a flush request by old flush implementation, instead of first using flush procedure, and then switching to old flush implementation after failing



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