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https://issues.apache.org/jira/browse/HBASE-15371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15174223#comment-15174223
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Stephen Yuan Jiang commented on HBASE-15371:
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[~tedyu], once parent procedures submit child procedures and finish his step,
he would sleep and wait for child procedure to complete. At that time, no new
child procedures would be added for this parent procedure.
> Procedure V2 - Completed support parent-child procedure
> -------------------------------------------------------
>
> Key: HBASE-15371
> URL: https://issues.apache.org/jira/browse/HBASE-15371
> Project: HBase
> Issue Type: Sub-task
> Components: proc-v2
> Affects Versions: 2.0.0, 1.3.0
> Reporter: Stephen Yuan Jiang
> Assignee: Stephen Yuan Jiang
> Fix For: 2.0.0
>
> Attachments: HBASE-15371.v1-master.patch
>
>
> In Procedure-V2 Phase 1 (HBASE-14336), some infrastructure of supporting
> child procedure exists. However, there is no need in Phase 1 (master DDL) to
> have multi-level procedures. This JIRA implements adding child procedures to
> procedure execution list and execute them before parent procedure can make
> further progress.
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