Minor - P4 Perform dump with compression...
$ mongodump -dtest --gzip
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2015-06-22T14:36:40.019-0400 writing test.system.indexes to dump/test/system.indexes.bson
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2015-06-22T14:36:40.021-0400 writing test.a to dump/test/a.bson
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2015-06-22T14:36:40.021-0400 writing test.b to dump/test/b.bson
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2015-06-22T14:36:40.023-0400 done dumping test.a
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2015-06-22T14:36:40.023-0400 done dumping test.b
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$ ls -al dump/test/
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total 68K
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drwxrwxr-x 2 wisdom wisdom 4.0K Jun 22 14:36 ./
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drwxrwxr-x 3 wisdom wisdom 4.0K Jun 22 14:36 ../
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-rw-rw-r-- 1 wisdom wisdom 47 Jun 22 14:36 a.bson.gz
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-rw-rw-r-- 1 wisdom wisdom 93 Jun 22 14:36 a.metadata.json.gz
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-rw-rw-r-- 1 wisdom wisdom 47 Jun 22 14:36 b.bson.gz
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-rw-rw-r-- 1 wisdom wisdom 93 Jun 22 14:36 b.metadata.json.gz
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-rw-rw-r-- 1 wisdom wisdom 79 Jun 22 14:36 system.indexes.bson.gz
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Note the absence of the .gz suffix.
It would also be helpful if during restore, we produced a helpful error message when a user attempts to restore compressed data without supplying --gzip
$ mongorestore
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2015-06-22T14:39:24.884-0400 using default 'dump' directory
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2015-06-22T14:39:24.885-0400 building a list of dbs and collections to restore from dump dir
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2015-06-22T14:39:24.885-0400 don't know what to do with file "dump/test/a.bson.gz", skipping...
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2015-06-22T14:39:24.885-0400 don't know what to do with file "dump/test/a.metadata.json.gz", skipping...
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2015-06-22T14:39:24.885-0400 don't know what to do with file "dump/test/b.bson.gz", skipping...
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2015-06-22T14:39:24.885-0400 don't know what to do with file "dump/test/b.metadata.json.gz", skipping...
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2015-06-22T14:39:24.885-0400 don't know what to do with file "dump/test/system.indexes.bson.gz", skipping...
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2015-06-22T14:39:24.885-0400 done
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