VMware Backup fails with Worker process has exited prematurely while performing File Level Index (4038519)

Binary log show the following:

Job Message       2015/09/09 12:21:25       62           Data Plugin         UHVC    TaskID  Starting File Level Index

Error      2015/09/09 12:21:38       62           Data Plugin         UHVC    Worker process  has exited prematurely

Error      2015/09/09 12:21:38       62           Data Plugin         UHVC    Will mark any backups handled by worker process  as failed

Error      2015/09/09 12:21:38       62           Data Plugin         UHVC    Marking the backup of VM 'FIN-Intranet' uuid '50298fbc-55c7-390c-7ad4-1b7afe8b9247' as failed

Error      2015/09/09 12:21:38       62           Data Plugin         UHVC    Failed to backup selected VM(s)

VMware trace file shows the following:

0             VOLNTFS             ???         10224    139        0             133558197129   Attribute 160 not in extension MFT record 0

4             ESXIBROK            ???         10224    97           0             133558197129   BEGIN ESXVmdkRead(5579722240, 832)

4             ESXIBROK            ???         10224    17           0             133558197129   BEGIN ESXIBrokerReadRange(5579722240,832)

4             ESXIBROK            ???         10224    24           0             133558197129   ESXIBrokerReadCache offset=5579722240 length=832

4             ESXIBROK            ???         10224    25           0             133558197129   Found page in cache matching 832 bytes. Hits 1

4             ESXIBROK            ???         10224    20           0             133558197129   END ESXIBrokerReadRange(1)

4             ESXIBROK            ???         10224    98           0             133558197129   END ESXVmdkRead(TRUE)

0             VOLNTFS             ???         10224    134        0             133558197129   Read cluster of attribute list entries, byte length 832

0             VOLNTFS             ???         10224    103        0             133558197129   May possibly have failed to find all instances of the attribute data

0             VOLNTFS             ???         10224    85           0             133558198130   Failed to find run holding VCN 32876

0             VOLNTFS             ???         10224    73           0             133558198130   Failed to find run containing VCN 32876

0             VOLNTFS             ???         10224    56           0             133558198130   Failed to read index block of sub-node 32876

BUG 22624