Cluster Nodes restart going on for eternity (no replies)

Problem Summary
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Cluster Nodes restart going on for eternity

Problem Description
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While tying to restart the ndb cluster the restoration is stuck at 37% in both the nodes:
2016-01-06 12:10:28 [MgmtSrvr] INFO -- Node 1: Data usage is 37%(367505 32K pages of total 983040)
2016-01-06 12:10:28 [MgmtSrvr] INFO -- Node 1: Index usage is 62%(329133 8K pages of total 524416)
2016-01-06 12:10:53 [MgmtSrvr] INFO -- Node 2: Data usage is 37%(367505 32K pages of total 983040)
2016-01-06 12:10:53 [MgmtSrvr] INFO -- Node 2: Index usage is 62%(329133 8K pages of total 524416)

Please suggest the reason and this is a priority since it is in production.

Thanks,
Subhajit



Error Codes
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Problem Category/Subcategory
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MySQL Cluster General Issues/Backup and Restoration


Template Question Responses
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1) Operating System
RedHat Enterprise Linux 6

2) Architecture
64 bit

3) MySQL Server version
Server version: 5.6.24-ndb-7.4.6-cluster-commercial-advanced-log MySQL Cluster Server - Advanced Edition (Commercial)