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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-18106) Redo ProcedureInfo and LockInfo
Date Sat, 24 Jun 2017 21:34:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-18106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16062144#comment-16062144
] 

stack commented on HBASE-18106:
-------------------------------

(Copied from HBASE-18240 where we add protobuf-util which can JSON-ify pb)

The JsonFormatter in protobuf-util is basic but should do the job. Here is output:

kalashnikov:hbase.git stack$ ./bin/hbase org.apache.hadoop.hbase.procedure2.TestProcedureUtil
{ "className": "org.apache.hadoop.hbase.procedure2.ProcedureTestingUtility$TestProcedure",
"procId": "10", "submittedTime": "1498339510660", "state": "RUNNABLE", "lastUpdate": "1498339510660",
"stateData": "AA==" }

adding this main on TestProcedureUtil:

public static void main(final String [] args) throws Exception
{ final TestProcedure proc1 = new TestProcedure(10); final ProcedureProtos.Procedure proto1
= ProcedureUtil.convertToProtoProcedure(proc1); JsonFormat.Printer printer = JsonFormat.printer().omittingInsignificantWhitespace();
System.out.println(printer.print(proto1)); }

For display in UI, could style the JSON and filter out state data.
For shell, could do simple one-lining (and purge state data... since it opaque. Later we might
add Stringification..)

> Redo ProcedureInfo and LockInfo
> -------------------------------
>
>                 Key: HBASE-18106
>                 URL: https://issues.apache.org/jira/browse/HBASE-18106
>             Project: HBase
>          Issue Type: Sub-task
>          Components: proc-v2
>    Affects Versions: 2.0.0
>            Reporter: stack
>             Fix For: 2.0.0
>
>
> ProcedureInfo was introduced as a lowest-common-denominator POJO that could be used as
a facade on PB Procedures. It was good for showing state of Procedure framework in shell and
UI.
> Its a bit weird though. Its up in hbase-common rather than in Procedure and it can only
ever show a subset of the Procedure info.
> I was thinking we could use the pb3.1 pb->JSON utility instead and emit a JSON String
wherever we need to export a view on procedure internals.
> This issue is about exploring this possibility. Would depend on our having an upgraded
guava (so probably depends on the 'pre-build' project).
> From ProcedureInfo and LockInfo need fixing in https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.kid1jzo114xw



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