/** * Test that a replica set member can process basic CRUD operations after switching from being * a shardsvr and back to non shardsvr. * @tags: [requires_persistence] */ (function() { "use strict"; var NUM_NODES = 3; /** * Checks that basic CRUD operations work as expected. Expects the collection to have a * { _id: 'marker' } document. */ var checkBasicCRUD = function(coll) { var doc = coll.findOne({_id: 'marker', y: {$exists: false}}); assert.neq(null, doc); assert.commandWorked(coll.update({_id: 'marker'}, {$set: {y: 2}})); assert.eq(2, coll.findOne({_id: 'marker'}).y); assert.commandWorked(coll.remove({_id: 'marker'})); assert.eq(null, coll.findOne({_id: 'marker'})); assert.commandWorked(coll.insert({_id: 'marker'}, {writeConcern: {w: NUM_NODES}})); assert.eq('marker', coll.findOne({_id: 'marker'})._id); }; var st = new ShardingTest({shards: {}}); var replShard = new ReplSetTest({nodes: NUM_NODES}); replShard.startSet({verbose: 1}); replShard.initiate(); var priConn = replShard.getPrimary(); // Starting a brand new replica set without '--shardsvr' will cause the FCV to be written as the // latest available for that binary. This poses a problem when this test is run in the mixed // version suite because mongos will be 'last-stable' and if this node is of the latest binary, // it will report itself as the 'latest' FCV, which would cause mongos to refuse to connect to // it and shutdown. // // In order to work around this, in the mixed version suite, be pessimistic and always set this // node to the 'last-stable' FCV if (jsTestOptions().shardMixedBinVersions) { assert.commandWorked(priConn.adminCommand({setFeatureCompatibilityVersion: lastStableFCV})); replShard.awaitReplication(); } assert.commandWorked(priConn.getDB('test').unsharded.insert({_id: 'marker'})); checkBasicCRUD(priConn.getDB('test').unsharded); assert.commandWorked(priConn.getDB('test').sharded.insert({_id: 'marker'})); checkBasicCRUD(priConn.getDB('test').sharded); for (var x = 0; x < NUM_NODES; x++) { replShard.restart(x, { shardsvr: '', }); } replShard.awaitNodesAgreeOnPrimary(); assert.commandWorked(st.s.adminCommand({addShard: replShard.getURL()})); priConn = replShard.getPrimary(); checkBasicCRUD(priConn.getDB('test').unsharded); checkBasicCRUD(priConn.getDB('test').sharded); checkBasicCRUD(st.s.getDB('test').unsharded); checkBasicCRUD(st.s.getDB('test').sharded); assert.commandWorked(st.s.adminCommand({enableSharding: 'test'})); assert.commandWorked(st.s.adminCommand({shardCollection: 'test.sharded', key: {_id: 1}})); checkBasicCRUD(st.s.getDB('test').unsharded); checkBasicCRUD(st.s.getDB('test').sharded); for (x = 0; x < 4; x++) { assert.commandWorked(st.s.getDB('test').sharded.insert({_id: x})); assert.commandWorked(st.s.adminCommand({split: 'test.sharded', middle: {_id: x}})); } let newShard = new ReplSetTest({name: "toRemoveLater", nodes: NUM_NODES, nodeOptions: {shardsvr: ""}}); newShard.startSet(); newShard.initiate(); assert.commandWorked(st.s.adminCommand({addShard: newShard.getURL(), name: 'toRemoveLater'})); for (x = 0; x < 2; x++) { assert.commandWorked( st.s.adminCommand({moveChunk: 'test.sharded', find: {_id: x}, to: 'toRemoveLater'})); } checkBasicCRUD(st.s.getDB('test').unsharded); checkBasicCRUD(st.s.getDB('test').sharded); assert.commandWorked(st.s.adminCommand({removeShard: 'toRemoveLater'})); // Start the balancer to start draining the chunks. st.startBalancer(); assert.soon(function() { var res = st.s.adminCommand({removeShard: 'toRemoveLater'}); return res.state == 'completed'; }); newShard.stopSet(); checkBasicCRUD(st.s.getDB('test').unsharded); checkBasicCRUD(st.s.getDB('test').sharded); st.stop(); checkBasicCRUD(priConn.getDB('test').unsharded); checkBasicCRUD(priConn.getDB('test').sharded); jsTest.log('About to restart repl w/o shardsvr'); replShard.nodes.forEach(function(node) { delete node.fullOptions.shardsvr; }); replShard.restart(replShard.nodes); replShard.awaitNodesAgreeOnPrimary(); priConn = replShard.getPrimary(); checkBasicCRUD(priConn.getDB('test').unsharded); checkBasicCRUD(priConn.getDB('test').sharded); replShard.stopSet(); })();