[ https://issues.apache.org/jira/browse/HADOOP-1707?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
dhruba borthakur updated HADOOP-1707: ------------------------------------- Status: Patch Available (was: Open) HadoopQA patch testing sees unit test failures that cannot be reproduced on linux machines. Re-submitting patch with additional debugging so that problem with unit test failing can be debugged. This in in lieu of having a direct account on the solaris machine on which Hadoop QA patch testing occurs. > Remove the DFS Client disk-based cache > -------------------------------------- > > Key: HADOOP-1707 > URL: https://issues.apache.org/jira/browse/HADOOP-1707 > Project: Hadoop > Issue Type: Improvement > Components: dfs > Reporter: dhruba borthakur > Assignee: dhruba borthakur > Fix For: 0.16.0 > > Attachments: clientDiskBuffer.patch, clientDiskBuffer10.patch, > clientDiskBuffer11.patch, clientDiskBuffer12.patch, clientDiskBuffer14.patch, > clientDiskBuffer15.patch, clientDiskBuffer16.patch, clientDiskBuffer17.patch, > clientDiskBuffer18.patch, clientDiskBuffer19.patch, clientDiskBuffer2.patch, > clientDiskBuffer20.patch, clientDiskBuffer21.patch, clientDiskBuffer22.patch, > clientDiskBuffer6.patch, clientDiskBuffer7.patch, clientDiskBuffer8.patch, > clientDiskBuffer9.patch, DataTransferProtocol.doc, DataTransferProtocol.html > > > The DFS client currently uses a staging file on local disk to cache all > user-writes to a file. When the staging file accumulates 1 block worth of > data, its contents are flushed to a HDFS datanode. These operations occur > sequentially. > A simple optimization of allowing the user to write to another staging file > while simultaneously uploading the contents of the first staging file to HDFS > will improve file-upload performance. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.