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https://issues.apache.org/jira/browse/HBASE-2856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13124572#comment-13124572
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jirapos...@reviews.apache.org commented on HBASE-2856:
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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/2224/
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(Updated 2011-10-10 23:30:10.189214)
Review request for Ted Yu, Michael Stack, Kannan Muthukkaruppan, and Karthik
Ranganathan.
Changes
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fix whitespace issues.
Summary
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address the 2856 issues by writing the memstoreTS to the disk.
version v11 of the patch.
uploading it here for easier review process.
This addresses bug HBASE-2856.
https://issues.apache.org/jira/browse/HBASE-2856
Diffs (updated)
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/src/test/java/org/apache/hadoop/hbase/regionserver/TestStoreFile.java
1181113
/src/test/java/org/apache/hadoop/hbase/io/hfile/TestHFileWriterV2.java
1181113
/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFile.java 1181113
/src/main/java/org/apache/hadoop/hbase/regionserver/StoreScanner.java 1181113
/src/test/java/org/apache/hadoop/hbase/TestAcidGuarantees.java 1181113
/src/test/java/org/apache/hadoop/hbase/io/hfile/TestCacheOnWrite.java 1181113
/src/main/java/org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.java
1181113
/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java 1181113
/src/main/java/org/apache/hadoop/hbase/regionserver/ReadWriteConsistencyControl.java
1181113
/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java 1181113
/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileWriterV2.java 1181113
/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderV2.java 1181113
/src/main/java/org/apache/hadoop/hbase/io/hfile/HFileReaderV1.java 1181113
/src/main/java/org/apache/hadoop/hbase/io/hfile/AbstractHFileReader.java
1181113
Diff: https://reviews.apache.org/r/2224/diff
Testing
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mvn test
Thanks,
Amitanand
> TestAcidGuarantee broken on trunk
> ----------------------------------
>
> Key: HBASE-2856
> URL: https://issues.apache.org/jira/browse/HBASE-2856
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.89.20100621
> Reporter: ryan rawson
> Assignee: Amitanand Aiyer
> Priority: Blocker
> Fix For: 0.94.0
>
> Attachments: 2856-v2.txt, 2856-v3.txt, 2856-v4.txt, 2856-v5.txt,
> acid.txt
>
>
> TestAcidGuarantee has a test whereby it attempts to read a number of columns
> from a row, and every so often the first column of N is different, when it
> should be the same. This is a bug deep inside the scanner whereby the first
> peek() of a row is done at time T then the rest of the read is done at T+1
> after a flush, thus the memstoreTS data is lost, and previously 'uncommitted'
> data becomes committed and flushed to disk.
> One possible solution is to introduce the memstoreTS (or similarly equivalent
> value) to the HFile thus allowing us to preserve read consistency past
> flushes. Another solution involves fixing the scanners so that peek() is not
> destructive (and thus might return different things at different times alas).
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