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https://issues.apache.org/jira/browse/KYLIN-904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14638769#comment-14638769
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hongbin ma commented on KYLIN-904:
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hi steven,
ResourceStore has other implementations others than hbase version. (e.g.
FileResourceStore)
FileResourceStore is based on local file system, so it can only be visited
recursively.
Even if HBaseResourceStore is using recursive visit fashion now, it does not
incur much cost because it only has one layer of "children"
> Recursive queries to method collectResourceRecursively(ResourceStore.java) is
> not necessary
> -------------------------------------------------------------------------------------------
>
> Key: KYLIN-904
> URL: https://issues.apache.org/jira/browse/KYLIN-904
> Project: Kylin
> Issue Type: Improvement
> Affects Versions: 0.7.1
> Reporter: steven zhang
> Priority: Minor
> Labels: github-import
> Fix For: 0.7.1
>
>
> it is not necessary collect Resource Recursively when kylin load metadata to
> cache
> because the path of Resource in table kylin_metadata such as /cube ,
> /cube_desc etc. is not prefix structure as follow example
> /a/b
> /a/b/xx
> /a/b/xx/xx
> /a/b/yy/yy
> /a/c
> even it have the prefix structure also it is unnecessary
> for example it will get all the records with prefix ‘a/b’ when query ‘a/b’
> /a/b
> /a/b/xx
> /a/b/xx/xx
> /a/b/yy/yy
> when query ’/a/b/xx‘ it will return children of it
> /a/b/xx/xx (it already queried before)
> so it is not necessary to query path of resource recursively
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