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https://issues.apache.org/jira/browse/CASSANDRA-19779?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stefan Miklosovic updated CASSANDRA-19779:
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Since Version: 5.0-alpha1
Status: Patch Available (was: Needs Committer)
> direct IO support is always evaluated to false upon the very first start of a
> node
> ----------------------------------------------------------------------------------
>
> Key: CASSANDRA-19779
> URL: https://issues.apache.org/jira/browse/CASSANDRA-19779
> Project: Cassandra
> Issue Type: Bug
> Components: Legacy/Tools
> Reporter: Stefan Miklosovic
> Assignee: Stefan Miklosovic
> Priority: Normal
> Fix For: 5.x
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When I extract the distribution tarball and I want to use tools in tools/bin,
> there is this warn log visible every time for tools when they are started
> (does not happen on "help" command, obviously)
> {code:java}
> WARN 14:25:11,835 Unable to determine block size for commit log directory:
> null {code}
> This is because we introduced this (1) in CASSANDRA-18464
> What that does is that it will go and try to create a temporary file in
> commit log directory to get "block size" for a "file store" that file is in.
> The problem with that is that when we just extract a tarball and run the
> tools - Cassandra was never started - then such commit log directory does not
> exist yet, so it tries to create a temporary file in a non-existing
> directory, which fails, hence the log message.
> The fix is to check if commitlog dir exists and return / skip the resolution
> of block size if it does not.
> Another approach might be to check if this is executed in the context of a
> tool and skip it from resolution altogether. The problem with this is that
> not all tools we have in bin/log call DatabaseDescriptor.
> toolInitialization() so we might combine these two.
> (1)
> [https://github.com/apache/cassandra/blob/cassandra-5.0/src/java/org/apache/cassandra/config/DatabaseDescriptor.java#L1455-L1462]
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