Yes Arpit, I am using HDP2.6.
Did you mean Apache Hadoop 2.6? I see the following fixes in 2.7 that touched Mover/Balancer code – HDFS-8540, HDFS-8143, HDFS-8204, HDFS-6133.
An RC for 2.7.1 will be out very soon. HDP 2.3 will have these fixes too. Please let us know if you continue to see this issue in 2.7.1 or HDP 2.3 so we can investigate it further.