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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-19033) Allow CP users to change versions and TTL before opening StoreScanner
Date Sun, 29 Oct 2017 14:06:02 GMT

     [ https://issues.apache.org/jira/browse/HBASE-19033?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Duo Zhang updated HBASE-19033:
------------------------------
    Release Note: 
Add back the three methods without a return value:
preFlushScannerOpen
preCompactScannerOpen
preStoreScannerOpen

Introduce a ScanOptions interface to let CP users change the max versions and TTL of a ScanInfo.
It will be passed as a parameter in the three methods above.

Inntroduce a new example WriteHeavyIncrementObserver which convert increment to put and do
aggregating when get. It uses the above three methods.

> Allow CP users to change versions and TTL before opening StoreScanner
> ---------------------------------------------------------------------
>
>                 Key: HBASE-19033
>                 URL: https://issues.apache.org/jira/browse/HBASE-19033
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Coprocessors
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Blocker
>             Fix For: 2.0.0-alpha-4
>
>         Attachments: HBASE-19033-v1.patch, HBASE-19033-v1.patch, HBASE-19033-v1.patch,
HBASE-19033-v2.patch, HBASE-19033-v2.patch, HBASE-19033.patch
>
>
> See the discussion in HBASE-19001. Changing versions and TTL is safe for flush/compaction
so we can expose them.



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