[
https://issues.apache.org/jira/browse/HADOOP-4379?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12708275#action_12708275
]
stack commented on HADOOP-4379:
-------------------------------
Tried the patch on loaded cluster. First attempt got file lease after about 30
seconds or so. Second test fell into a loop:
{code}
2009-05-12 00:51:16,031 [HMaster] INFO org.apache.hadoop.hdfs.DFSClient: Could
not complete file
/hbasetrunk2/.logs/aa0-000-14.u.powerset.com_1242088970041_60021/hlog.dat.1242089388713
retrying...
2009-05-12 00:51:16,441 [HMaster] INFO org.apache.hadoop.hdfs.DFSClient: Could
not complete file
/hbasetrunk2/.logs/aa0-000-14.u.powerset.com_1242088970041_60021/hlog.dat.1242089388713
retrying...
...
{code}
Sending Dhruba hdfs logs.
> 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
> Priority: Blocker
> Fix For: 0.19.2
>
> Attachments: 4379_20081010TC3.java, fsyncConcurrentReaders.txt,
> fsyncConcurrentReaders3.patch, fsyncConcurrentReaders4.patch,
> fsyncConcurrentReaders5.txt, fsyncConcurrentReaders6.patch,
> hypertable-namenode.log.gz, namenode.log, namenode.log, Reader.java,
> Reader.java, reopen_test.sh, ReopenProblem.java, Writer.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".
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
