issue-628 Handled failures which might occur during write-behind

[heyhiren]

Handle the failure which may occur during following write-behind scenarios and removed failed entries from cache.

• Batching
• NonBatching

[jhouserizer]

Failing tests need investigated

[heyhiren]

Since dead lock was happening in earlier solution for batching write-behind, changed to place to run the cleanup for failures.

[heyhiren]

Re-based with master