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https://issues.apache.org/jira/browse/HADOOP-4379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12667499#action_12667499
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Doug Judd commented on HADOOP-4379:
-----------------------------------
This may be a problem on our end. When I shut down hypertable and then copy
each range_txn log file to the local filesystem, the files seem to contain more
than just the 7-byte header.
[d...@motherlode000 aol-basic]$ ls -l rsml/
total 32
-rw-rw-r-- 1 doug doug 564 Jan 26 15:35 102.log
-rw-rw-r-- 1 doug doug 84 Jan 26 15:35 104.log
-rw-rw-r-- 1 doug doug 1206 Jan 26 15:35 106.log
-rw-rw-r-- 1 doug doug 634 Jan 26 15:35 108.log
-rw-rw-r-- 1 doug doug 84 Jan 26 15:35 110.log
-rw-rw-r-- 1 doug doug 1942 Jan 26 15:36 112.log
-rw-rw-r-- 1 doug doug 1074 Jan 26 15:36 114.log
-rw-rw-r-- 1 doug doug 525 Jan 26 15:36 116.log
> In HDFS, sync() not yet guarantees data available to the new readers
> --------------------------------------------------------------------
>
> Key: HADOOP-4379
> URL: https://issues.apache.org/jira/browse/HADOOP-4379
> Project: Hadoop Core
> Issue Type: New Feature
> Components: dfs
> Reporter: Tsz Wo (Nicholas), SZE
> Assignee: dhruba borthakur
> Fix For: 0.19.1
>
> Attachments: 4379_20081010TC3.java, fsyncConcurrentReaders.txt,
> fsyncConcurrentReaders3.patch, Reader.java, Writer.java
>
>
> In the append design doc
> (https://issues.apache.org/jira/secure/attachment/12370562/Appends.doc), it
> says
> * A reader is guaranteed to be able to read data that was 'flushed' before
> the reader opened the file
> However, this feature is not yet implemented. Note that the operation
> 'flushed' is now called "sync".
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