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https://issues.apache.org/jira/browse/STORM-584?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14320701#comment-14320701
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Robert Joseph Evans commented on STORM-584:
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Thinking about it now this is probably marked too high in severity. The
current state is two wrongs making it not that bad. The logging metrics
consumer just puts its logs in with the worker logs. This works just fine, so
long as you don't mind filtering them out. Perhaps we should just remove the
section for metircs.log altogether and call it good.
> LoggingMetricsConsumer metrics.log file is shared by multiple topologies.
> -------------------------------------------------------------------------
>
> Key: STORM-584
> URL: https://issues.apache.org/jira/browse/STORM-584
> Project: Apache Storm
> Issue Type: Bug
> Affects Versions: 0.10.0
> Reporter: Robert Joseph Evans
> Priority: Critical
>
> The current cluster.xml file has special configuration for the
> LoggingMetricsConsumer to place it in a metrics.log file. There are several
> issues with this.
> The worker, where the LoggingMetricsConsumer is run, is configured using
> worker.xml and not cluster.xml.
> The metrics.log file is shared by all workers running on the same node. So
> if by chance we have LoggingMetricsConsumer instances running at the same
> time, the resulting log file could have a number of issues, including data
> corruption.
> This becomes much worse under security where only the first
> LoggingMetricsConsumer to run on the node will own the file, and all others
> will fail to log metrics.
> Also there is no way to access metrics.log through the ui now.
> Ideally the metrics.log file will follow a pattern similar to the worker log
> file, and have the topology name and the worker port a part of it. We also
> would want to update the logviewer daemon to allow serving up these files and
> deleting them after a specific period of time. The it would be awesome if
> the UI could detect that a logging metrics consumer is installed, and provide
> links to the metrics.log file as well.
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