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https://issues.apache.org/jira/browse/KYLIN-3144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16316128#comment-16316128
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jiatao.tao commented on KYLIN-3144:
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Thanks.
> Adopt Collections.emptyList() for empty list values
> ---------------------------------------------------
>
> Key: KYLIN-3144
> URL: https://issues.apache.org/jira/browse/KYLIN-3144
> Project: Kylin
> Issue Type: Improvement
> Reporter: Ted Yu
> Assignee: jiatao.tao
> Priority: Minor
>
> Use Collection.emptyList() for returning an empty list instead of returning
> new ArrayList<>().
> The default constructor creates a buffer of size 10 for ArrayList .
> Therefore, returning this static value saves some memory and lessens GC
> pressure.
> One candidate for replacement is in HybridService#listHybrids()
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