Fix NPE for totally empty index without any metadata and data.
Issues Resolved
[List any issues this PR will resolve]
Check List
[ ] New functionality includes testing.
[ ] All tests pass
[ ] New functionality has been documented.
[ ] New functionality has javadoc added
[ ] Commits are signed per the DCO using --signoff
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Description
Fix NPE for totally empty index without any metadata and data.
Issues Resolved
[List any issues this PR will resolve]
Check List
By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license. For more information on following Developer Certificate of Origin and signing off your commits, please check here.