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/**
* Drops all sharded collections (except for collections used internally,
* like config.system.sessions).
*/
(function() {
"use strict";
load("jstests/libs/fixture_helpers.js"); // For isMongos.
assert.neq(typeof db, 'undefined', 'No `db` object, is the shell connected to a mongod?');
assert(FixtureHelpers.isMongos(db), "not connected to mongos");
let balSettingResult = assert.commandWorked(db.adminCommand({balancerStatus: 1}));
if (balSettingResult.mode !== 'off') {
assert.commandWorked(db.adminCommand({balancerStop: 1}));
}
db.getSiblingDB('config').collections.find().forEach(collEntry => {
if (collEntry._id !== 'config.system.sessions') {
let nsSplit = collEntry._id.split('.');
const dbName = nsSplit.shift();
const collName = nsSplit.join('.');
// Note: drop also cleans up tags and chunks associated with ns.
assert.commandWorked(db.getSiblingDB(dbName).runCommand({drop: collName}));
}
});
// Turn balancer back on if it was not off earlier.
if (balSettingResult.mode !== 'off') {
assert.commandWorked(db.adminCommand({balancerStart: 1}));
}
})();
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