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https://issues.apache.org/jira/browse/LENS-1333?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15557107#comment-15557107
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Narayan Periwal commented on LENS-1333:
---------------------------------------
[~prongs], actually it's a compilation error
{code}
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-Lens-Build/lens-cube/src/main/java/org/apache/lens/cube/parse/CubeQueryConfUtil.java:[124,39]
cannot find symbol
symbol: class DataCompletenessChecker
location: class org.apache.lens.cube.parse.CubeQueryConfUtil
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-Lens-Build/lens-cube/src/main/java/org/apache/lens/cube/parse/StorageTableResolver.java:[71,11]
cannot find symbol
symbol: class DataCompletenessChecker
location: class org.apache.lens.cube.parse.StorageTableResolver
[ERROR]
/home/jenkins/jenkins-slave/workspace/PreCommit-Lens-Build/lens-cube/src/main/java/org/apache/lens/cube/parse/DefaultChecker.java:[27,40]
cannot find symbol
symbol: class DataCompletenessChecker
{code}
This will get compiled once LENS-1340 gets checked in. As the changes for
LENS-1340 got reverted, therefore it's not compiling.
> Add data completeness checker
> -----------------------------
>
> Key: LENS-1333
> URL: https://issues.apache.org/jira/browse/LENS-1333
> Project: Apache Lens
> Issue Type: New Feature
> Components: cube
> Reporter: Amareshwari Sriramadasu
> Assignee: Narayan Periwal
> Attachments: LENS-1333-v1.patch
>
>
> Though lens has partition registration being done whenever data is available,
> there is no guarantee the partition registered is complete. There can be
> different ways to know if the data is complete for partition. One option
> could be to have a partition property saying whether it is complete or not.
> Other could be to do a http call to another hosted service and more.
> Proposal here is to add an interface for DataCompletenessChecker and do the
> check while resolving partitions.
> Here are some of the capabilities we would like to add in Lens :
> # Lens will check partition existence first, if it exists, then check the
> completeness percentage. If the completeness percentage is less than a
> configured threshold (default should be 98, 99 or even 100), Lens will fail
> the query.
> # Lens's accept query on partial data will accept on incomplete data as well.
> # Lens will also option to override the completeness percentage threshold
> value at query level
> # Lens will still have look ahead capability of daily being incomplete, then
> it will union with hourly.
> # If same measure is there in two different facts , Lens will we pick the one
> with higher availability.
> # In case of completeness percentage threshold missed, Lens will respond back
> with available percentage.
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