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https://issues.apache.org/jira/browse/HADOOP-11569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14338064#comment-14338064
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Tsuyoshi Ozawa commented on HADOOP-11569:
-----------------------------------------
Suggested code flow of close() is as follows:
{code}
private void close() throws IOException {
for (int i = 0; i < inReaders.length; i++) {
IOUtils.closeStream(inReaders[i]);
inReaders[i] = null;
}
if (outWriter != null) {
outWriter.close();
outWriter = null;
}
}
{code}
> Provide Merge API for MapFile to merge multiple similar MapFiles to one
> MapFile
> -------------------------------------------------------------------------------
>
> Key: HADOOP-11569
> URL: https://issues.apache.org/jira/browse/HADOOP-11569
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Vinayakumar B
> Assignee: Vinayakumar B
> Attachments: HADOOP-11569-001.patch, HADOOP-11569-002.patch,
> HADOOP-11569-003.patch, HADOOP-11569-004.patch
>
>
> If there are multiple similar MapFiles of the same keyClass and value
> classes, then these can be merged together to One MapFile to allow search
> easier.
> Provide an API similar to {{SequenceFile#merge()}}.
> Merging will be easy with the fact that MapFiles are already sorted.
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