NVSD error message "DAVLAY Read task with the URI library failed" explained (4044114)

While maintaining an open ssh session to a Linux NVSD instance, the open terminal window shows messages similar to the following:

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***** 18831 1327505579.419961 NET TCP connection reset or aborted on socket '10' : 104:
***** 18831 1327505579.420244 DEDUPE Dedupe Failed While in Dedupe Read to FD
***** 18831 1327505579.420272 LIBERROR ErrorStack start
***** 18831 1327505579.420296 LIBERROR dom="libdedupe", func="libdedupe_sendfile_cookie", line=2943, err=1, desc="error from below"
***** 18831 1327505579.420310 LIBERROR dom="libchunk", func="bmap_internal", line=1110, err=1, desc="error from below"
***** 18831 1327505579.420320 LIBERROR dom="libdedupe", func="do_write", line=1914, err=9, desc="error writing to socketed stream"
***** 18831 1327505579.420333 LIBERROR ErrorStack stop
***** 18831 1327505579.420359 ELEMBROK Failed to Read from Element Broker to TCP : Failed to write Deduplication cookie '7f000001e4301a4fb5dcbb714f250000b9fd0100' to socket : 'unknown error'
***** 18831 1327505579.420386 URICORE Failed to move 33554432 bytes between brokers for '/NVBU/server/backup/segments/0100007f2a1a4f1b72a9226008000003' : 'Failed'
***** 18831 1327505579.420399 URI Failed to read 33554432 bytes from URI Handler of '/NVBU/server/backup/segments/0100007f2a1a4f1b72a9226008000003'
***** 18831 1327505579.420409 DAVLAY Read task with the URI library failed
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