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https://issues.apache.org/jira/browse/THRIFT-3907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15462650#comment-15462650
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ASF GitHub Bot commented on THRIFT-3907:
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Github user nsuke commented on the issue:
https://github.com/apache/thrift/pull/1070
superceded by #1079
> Skip Docker image build on CI when unchanged
> --------------------------------------------
>
> Key: THRIFT-3907
> URL: https://issues.apache.org/jira/browse/THRIFT-3907
> Project: Thrift
> Issue Type: Improvement
> Reporter: Aki Sukegawa
> Assignee: Aki Sukegawa
>
> Previously we were able to reuse Docker layers from prebuilt images pulled
> from docker hub.
> This has been reducing total build time by 3 hours out of 7~8 hours total.
> After Docker 1.10 or so, it is no longer possible and we tend to easily
> saturate entire Apache's 30 jobs on Travis-CI.
> Standard solution as of now is to use docker save/load.
> This typically requires automated file upload on CI to some external storage.
> Unfortunately it cannot be done with our current Travis-CI account settings.
> To workaround this, we can put Dockerfile itself to Docker image and see if
> it's modified after the prebuild time and skip fresh builds if unchanged.
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