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https://issues.apache.org/jira/browse/HBASE-4507?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13117811#comment-13117811
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[email protected] commented on HBASE-4507:
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https://reviews.apache.org/r/2118/#review2203
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Nice stuff, Stack.
Some questions:
1. The approach of "isTimestampClash and the nowBytes = Bytes.toBytes(now +
1)". It seems there is still a rare case, where
EnvironmentEdgeManager.currentTimeMillis() returns
expectedTimestampOfLatestVersion - 1. Then later on in put, updateKVTimestamps
set it to the new now value, which happens to be
expectedTimestampOfLatestVersion. Perhaps we can use "now <=
expectedTimestampOfLatestVersion" condition instead of "now ==
expectedTimestampOfLatestVersion" in isTimestampClash. Set the new time value
as nowBytes = Bytes.toBytes(expectedTimestampOfLatestVersion + 1).
2. Do we need to modify coprocessor interfaces preCheckAndPut, postCheckAndPut,
etc.? Perhaps we don't have any scenario for this yet.
3. Do we need the same thing for checkAndDelete? Perhaps we don't have any
scenario for this yet.
- Ming
On 2011-09-29 23:52:43, Michael Stack wrote:
bq.
bq. -----------------------------------------------------------
bq. This is an automatically generated e-mail. To reply, visit:
bq. https://reviews.apache.org/r/2118/
bq. -----------------------------------------------------------
bq.
bq. (Updated 2011-09-29 23:52:43)
bq.
bq.
bq. Review request for hbase.
bq.
bq.
bq. Summary
bq. -------
bq.
bq. Adds a checkAndPut that takes a timestamp
bq.
bq.
bq. This addresses bug hbase-4507.
bq. https://issues.apache.org/jira/browse/hbase-4507
bq.
bq.
bq. Diffs
bq. -----
bq.
bq. src/main/java/org/apache/hadoop/hbase/ipc/HRegionInterface.java 3679c02
bq. src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java 6ec857c
bq. src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
96b763b
bq. src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java
99b34cc
bq.
bq. Diff: https://reviews.apache.org/r/2118/diff
bq.
bq.
bq. Testing
bq. -------
bq.
bq.
bq. Thanks,
bq.
bq. Michael
bq.
bq.
> Create checkAndPut variant that exposes timestamp / UUID
> --------------------------------------------------------
>
> Key: HBASE-4507
> URL: https://issues.apache.org/jira/browse/HBASE-4507
> Project: HBase
> Issue Type: Sub-task
> Reporter: Ted Yu
> Assignee: stack
>
> Michael checked the checkAndPut which doesn't expose timestamp. A variant of
> checkAndPut should be created to expose timestamp which is written into a
> column specified by additional parameters.
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