CorfuTable getByIndexAndFilter logging

[zalokhan]

Overview

Description: Change CorfuTable getByIndexAndFilter logging from WARN to DEBUG.

Why should this be merged: CorfuTable can now be used with a single index only, so emitting a warn message is excessive.

Checklist (Definition of Done):

• There are no TODOs left in the code
• Coding conventions (e.g. for logging, unit tests) have been followed
• Change is covered by automated tests
• Public API has Javadoc

[coveralls]

Coverage decreased (-0.1%) to 70.591% when pulling 130ad13 on zalokhan:logging into 403a8d9 on CorfuDB:master.

[corfudb-performance]

Results automatically generated by CorfuDB Benchmark Framework to assess the performance of this pull request for commit 130ad13.

*** 0.03333333333333333% transaction FAILURE rate for NonConflictingTx+Scan workload, 1 threads, Disk mode
*** 0.49166666666666664% transaction FAILURE rate for NonConflictingTx+Scan workload, 5 threads, Disk mode
*** 0.4666666666666667% transaction FAILURE rate for NonConflictingTx+Scan workload, 10 threads, Disk mode
*** 0.03333333333333333% transaction FAILURE rate for NonConflictingTx+Iterator workload, 1 threads, Disk mode
*** 1.1416666666666666% transaction FAILURE rate for NonConflictingTx+Iterator workload, 5 threads, Disk mode
*** 1.875% transaction FAILURE rate for NonConflictingTx+Iterator workload, 10 threads, Disk mode
*** 0.0% transaction FAILURE rate for NonConflictingTx workload, 1 threads, Disk mode
*** 0.0% transaction FAILURE rate for NonConflictingTx workload, 5 threads, Disk mode
*** 0.0% transaction FAILURE rate for NonConflictingTx workload, 10 threads, Disk mode

An interactive dashboard with Pull Request Performance Metrics for ALL cluster types and numbers of threads in run, is available at:
Pull Request #1030 Graphs

[no2chem]

Looks good. Check the boxes in the pull request form. We should add a "Why should this be merged" field to the overview as well to add some background.

[zalokhan]

Yes, I've checked them.
"Why should this be merged" would be good to have in case there is no pending github issue.

[no2chem]

Great. I've added that to the PR, and will add it to the template now.