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https://issues.apache.org/jira/browse/KUDU-1728?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17124338#comment-17124338
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Andrew Wong commented on KUDU-1728:
-----------------------------------
To get a sense for how serial this process is, you can walk through
{{TabletCopyClient::DownloadBlocks}} and note how we download and subsequently
write a single block at a time. While this doesn't incur an fsync until all
blocks are downloaded, on account of the block manager transaction, we could
still probably push this a bit and try requesting more blocks be sent in
parallel.
> Parallelize tablet copy operations
> ----------------------------------
>
> Key: KUDU-1728
> URL: https://issues.apache.org/jira/browse/KUDU-1728
> Project: Kudu
> Issue Type: Bug
> Components: consensus, tablet
> Reporter: Mike Percy
> Priority: Major
> Labels: roadmap-candidate
>
> Parallelize tablet copy operations. Right now all data is copied serially. We
> may want to consider throttling on either side if we want to budget IO.
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