Major - P3 The colon character is reserved in NTFS and cannot be used in a filename. MongoDB encounters irregular and strange errors in various situations involving colons in collection names, which allow colons.
We recently had a dump of a database with collection names like "500:backfill:2047". That dump won't copy to a Windows volume.
Attempting to dump a database with collections containing a single colon will create corrupted dumps with the colon indicating an alternate data stream:
C:\Users\jaraco\projects\public\keyring [default tip]> mongo
MongoDB shell version: 2.4.9
connecting to: test
> db.getCollection("bar:baz").insert({"a": 1})
>
bye
C:\Users\jaraco\projects\public\keyring [default tip]> mongodump -d test
connected to: 127.0.0.1
Fri Mar 21 11:52:38.245 DATABASE: test to dump\test
Fri Mar 21 11:52:38.247 test.system.indexes to dump\test\system.indexes.bson
Fri Mar 21 11:52:38.250 3 objects
Fri Mar 21 11:52:38.252 test.tabs to dump\test\tabs.bson
Fri Mar 21 11:52:38.265 1 objects
Fri Mar 21 11:52:38.267 Metadata for test.tabs to dump\test\tabs.metadata.json
Fri Mar 21 11:52:38.270 test.bar:baz to dump\test\bar:baz.bson
Fri Mar 21 11:52:38.273 1 objects
Fri Mar 21 11:52:38.275 Metadata for test.bar:baz to dump\test\bar:baz.metadata.json
C:\Users\jaraco\projects\public\keyring [default ?4 tip]> dir dump\test
Directory: C:\Users\jaraco\projects\public\keyring\dump\test
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a--- 21-Mar-2014 11:52 0 bar
-a--- 21-Mar-2014 11:52 237 system.indexes.bson
-a--- 21-Mar-2014 11:52 158 tabs.bson
-a--- 21-Mar-2014 11:52 200 tabs.metadata.json
Add another colon to the collection name will cause mongodump to crash.
C:\Users\jaraco\projects\public\keyring [default tip]> mongo
MongoDB shell version: 2.4.9
connecting to: test
> db.getCollection("bar:baz:bing").insert({"b": 2})
>
bye
C:\Users\jaraco\projects\public\keyring [default tip]> mongodump -d test
connected to: 127.0.0.1
Fri Mar 21 16:11:17.549 DATABASE: test to dump\test
Fri Mar 21 16:11:17.550 test.system.indexes to dump\test\system.indexes.bson
Fri Mar 21 16:11:17.551 4 objects
Fri Mar 21 16:11:17.553 test.tabs to dump\test\tabs.bson
Fri Mar 21 16:11:17.553 1 objects
Fri Mar 21 16:11:17.555 Metadata for test.tabs to dump\test\tabs.metadata.json
Fri Mar 21 16:11:17.558 test.bar:baz to dump\test\bar:baz.bson
Fri Mar 21 16:11:17.559 1 objects
Fri Mar 21 16:11:17.561 Metadata for test.bar:baz to dump\test\bar:baz.metadata.json
Fri Mar 21 16:11:17.563 test.bar:baz:bing to dump\test\bar:baz:bing.bson
<-- crash happens here
Mongodump should dump to a file format that's compatible with Windows.
- duplicates
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TOOLS-14 Mongodump handling characters in collections and database names, that are not supported by the platform
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- Closed
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