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https://issues.apache.org/jira/browse/OAK-1925?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14048612#comment-14048612
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Thomas Mueller commented on OAK-1925:
-------------------------------------
As an alternative, what about using FileChannel instead of RandomAccessFile?
That way, no buffer is needed, and no synchronization. Instead, positioned
reads and writes can be used: read(ByteBuffer dst, long position),
write(ByteBuffer src, long position). We could also use add a cache layer if
needed ([I implemented
one|https://code.google.com/p/h2database/source/browse/trunk/h2/src/main/org/h2/mvstore/cache/FilePathCache.java]
that I could contribute)
> Use streamed io instead of RandomAccessFile in TarWriter
> --------------------------------------------------------
>
> Key: OAK-1925
> URL: https://issues.apache.org/jira/browse/OAK-1925
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Components: segmentmk
> Reporter: Chetan Mehrotra
> Priority: Minor
> Fix For: 1.1
>
> Attachments: OAK-1925.patch
>
>
> TarWriter currently uses RandomAccessFile to
> * Write the tar entries
> * Read written entries
> The write however are currently sequential. It might be better to use
> streamed buffered io for the write and maintain an in memory cache of written
> tar entries to serve the reads.
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