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https://issues.apache.org/jira/browse/KUDU-1950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17124132#comment-17124132
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Grant Henke commented on KUDU-1950:
-----------------------------------
This should be resolved via
https://github.com/apache/kudu/commit/fc4ab691a502067bc4d5bdff30507cac7feb7cfe
> TS runs out of FDs for WALs when running many tablets
> -----------------------------------------------------
>
> Key: KUDU-1950
> URL: https://issues.apache.org/jira/browse/KUDU-1950
> Project: Kudu
> Issue Type: Improvement
> Components: consensus, fs, tserver
> Affects Versions: 1.2.0
> Reporter: David Alves
> Priority: Major
> Labels: dense-storage, scalability
>
> A user was recently complaining that his TS ran out of FDs when he had many
> tablets and that most were being used by WALs.
> While this was a bit of a non-usual setup - a lot of un-replicated tablets on
> a single TS - we're likely to hit this problem as we increase density and try
> and have many more tablets per tablet server.
> The report was that each tablet would use 3 fd's for the WAL. Ultimately
> we'll likely need some solution akin to the what we've done for the FBM/LBM
> regarding having an LRU cache of fds for the WAL too.
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