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https://issues.apache.org/jira/browse/HBASE-18106?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16076705#comment-16076705
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stack commented on HBASE-18106:
-------------------------------
So, poking (prompted by [~balazs.meszaros] questions), our Procedure PB only
has core info and the 'extra' that is particular to a Procedure type is done as
special info to serialize. Can see this when I hack up serialization of a
SplitTableRegionProcedure:
{"className":"org.apache.hadoop.hbase.master.assignment.SplitTableRegionProcedure","procId":"18446744073709551615","submittedTime":"0","state":"INITIALIZING","lastUpdate":"0","stateData":"ABsIARINCgVoYmFzZRIEbWV0YRoAIgAoADAAOABxCgYKBE5PTkUSGwgBEg0KBWhiYXNlEgRtZXRhGgAiACgAMAA4ABokCOy/lsTRKxINCgVoYmFzZRIEbWV0YRoAIgRpbmZvKAAwADgAGiQI7L+WxNErEg0KBWhiYXNlEgRtZXRhGgRpbmZvIgAoADAAOAA="}
The parent region and daughters, etc., is in the opaque 'stateData'.
Makes sense.
Means for JSON would need means of JSON version of stateData....
> 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
> Priority: Critical
> 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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