This causes tools that process bson files such as bsondump and support tooling to fail due to malformed bson file, best case with a sanity check error, worst case with a crash.
> bsondump /ssd/db/r0/diagnostic.data/metrics.interim
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2015-09-15T15:07:11.098-0400 1 objects found
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2015-09-15T15:07:11.098-0400 invalid BSONSize: 138771735 bytes
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> bsondump /ssd/db/r0/diagnostic.data/metrics.interim
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panic: runtime error: slice bounds out of range
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goroutine 1 [running]:
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github.com/mongodb/mongo-tools/common/db.(*BSONSource).LoadNextInto(0xc20800a160, 0xc2080ae000, 0x1000000, 0x1000000, 0xc208038008)
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/srv/10gen/mci-exec/mci/src/src/mongo-tools-repo/.gopath/src/github.com/mongodb/mongo-tools/common/db/bson_stream.go:98 +0x689
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github.com/mongodb/mongo-tools/common/db.(*DecodedBSONSource).Next(0xc208054040, 0x594680, 0xc20800a040, 0x8)
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/srv/10gen/mci-exec/mci/src/src/mongo-tools-repo/.gopath/src/github.com/mongodb/mongo-tools/common/db/bson_stream.go:56 +0x59
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github.com/mongodb/mongo-tools/bsondump.(*BSONDump).JSON(0xc208054080, 0x0, 0x0, 0x0)
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/srv/10gen/mci-exec/mci/src/src/mongo-tools-repo/.gopath/src/github.com/mongodb/mongo-tools/bsondump/bsondump.go:87 +0x281
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main.main()
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/srv/10gen/mci-exec/mci/src/src/mongo-tools-repo/bsondump/main/bsondump.go:74 +0x8c2
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|
goroutine 5 [syscall]:
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os/signal.loop()
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/usr/local/go/src/os/signal/signal_unix.go:21 +0x1f
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created by os/signal.init·1
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/usr/local/go/src/os/signal/signal_unix.go:27 +0x35
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goroutine 6 [chan receive]:
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github.com/mongodb/mongo-tools/common/signals.Handle()
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/srv/10gen/mci-exec/mci/src/src/mongo-tools-repo/.gopath/src/github.com/mongodb/mongo-tools/common/signals/signals_unix.go:16 +0x209
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created by main.main
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/srv/10gen/mci-exec/mci/src/src/mongo-tools-repo/bsondump/main/bsondump.go:14 +0x34
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