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From "dhruba borthakur (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-2657) Enhancements to DFSClient to support flushing data at any point in time
Date Fri, 18 Jan 2008 18:10:34 GMT
Enhancements to DFSClient to support flushing data at any point in time
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                 Key: HADOOP-2657
                 URL: https://issues.apache.org/jira/browse/HADOOP-2657
             Project: Hadoop
          Issue Type: New Feature
          Components: dfs
            Reporter: dhruba borthakur


The HDFS Append Design (HADOOP-1700) requires that there be a public API to flush data written
to a HDFS file that can be invoked by an application. This API (popularly referred to a fflush(OutputStream))
will ensure that data written to the DFSOutputStream is flushed to datanodes and any required
metadata is persisted on Namenode.

This API has to handle the case when the client decides to flush after writing data that is
not a exact multiple of io.bytes.per.checksum.

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