scan_checked_replset.js attempts to incorrectly scan on truncated collection name

XMLWordPrintableJSON

    • Type: Bug
    • Resolution: Duplicate
    • Priority: Major - P3
    • None
    • Affects Version/s: None
    • Component/s: None
    • None
    • ALL
    • None
    • 3
    • None
    • None
    • None
    • None
    • None
    • None

      Currently, scan_checked_replset.js parses namespaces from documents by splitting the namespace on a period ".".

      let [dbName, collName] = doc.namespace.split('.', 2);

      This is problematic for collections that contain periods in the collection name, e.g:

      admin.system.users
config.system.sessions

      This leads to the script attempting to scan on partial namespaces:

      {
	"msg" : "Scanning range",
	"range" : {
		"_id" : {
			"db" : "admin",
			"collection" : "system",
			"minKey" : { "$minKey" : 1 },
			"maxKey" : { "$maxKey" : 1 }
		}
	}
}
{
	"msg" : "Scanning range",
	"range" : {
		"_id" : {
			"db" : "config",
			"collection" : "system",
			"minKey" : { "$minKey" : 1 },
			"maxKey" : { "$maxKey" : 1 }
		}
	}
}

      We can fix this by ensuring that the full collection name is not split against by slicing on the first occurrence of a "."

      let i = doc.namespace.indexOf(".")
let [dbName, collName] = [doc.namespace.slice(0,i), doc.namespace.slice(i+1)];

            Assignee:
            Eric Sedor
            Reporter:
            Edwin Zhou
            Votes:
            0 Vote for this issue
            Watchers:
            2 Start watching this issue

              Created:
              Updated:
              Resolved: