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https://issues.apache.org/jira/browse/ASTERIXDB-1338?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Murtadha Hubail resolved ASTERIXDB-1338.
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Resolution: Fixed
> Metadata Datasets are Evicted on Low Memory
> -------------------------------------------
>
> Key: ASTERIXDB-1338
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-1338
> Project: Apache AsterixDB
> Issue Type: Bug
> Reporter: Murtadha Hubail
> Assignee: Murtadha Hubail
> Priority: Critical
>
> When many datasets are created and we need to evict unused ones from memory
> to allocate their space for the newly created ones, metadata datasets are
> selected as candidates for eviction. Once they are evicted, the system
> becomes unusable. This is because of of the special treatment of metadata
> indexes since they are registered only once during metadata bootstrap.
> To reproduce the issue, just create many datasets and insert a record in them
> to force their memory to be allocated. Eventually, the metadata datasets will
> be evicted and the instance will be unusable.
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