103 lines
3.6 KiB
JavaScript
103 lines
3.6 KiB
JavaScript
// test that a rollback of an index creation op caused the index to be dropped.
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//
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// If all data-bearing nodes in a replica set are using an ephemeral storage engine, the set will
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// not be able to survive a scenario where all data-bearing nodes are down simultaneously. In such a
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// scenario, none of the members will have any data, and upon restart will each look for a member to
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// inital sync from, so no primary will be elected. This test induces such a scenario, so cannot be
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// run on ephemeral storage engines.
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// @tags: [requires_persistence]
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load("jstests/replsets/rslib.js");
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// function to check the logs for an entry
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doesEntryMatch = function(array, regex) {
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var found = false;
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for (i = 0; i < array.length; i++) {
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if (regex.test(array[i])) {
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found = true;
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}
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}
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return found;
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};
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// set up a set and grab things for later
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var name = "rollback_index";
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var replTest = new ReplSetTest({name: name, nodes: 3});
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var nodes = replTest.nodeList();
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var conns = replTest.startSet();
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replTest.initiate({
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"_id": name,
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"members": [
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{"_id": 0, "host": nodes[0], priority: 3},
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{"_id": 1, "host": nodes[1]},
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{"_id": 2, "host": nodes[2], arbiterOnly: true}
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]
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});
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var a_conn = conns[0];
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var b_conn = conns[1];
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var AID = replTest.getNodeId(a_conn);
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var BID = replTest.getNodeId(b_conn);
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replTest.waitForState(replTest.nodes[0], ReplSetTest.State.PRIMARY, 60 * 1000);
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// get master and do an initial write
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var master = replTest.getPrimary();
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assert(master === conns[0], "conns[0] assumed to be master");
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assert(a_conn.host === master.host, "a_conn assumed to be master");
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var options = {writeConcern: {w: 2, wtimeout: 60000}, upsert: true};
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assert.writeOK(a_conn.getDB(name).foo.insert({x: 1}, options));
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// shut down master
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replTest.stop(AID);
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// Create a unique index that, if not dropped during rollback, would
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// cause errors when applying operations from the primary.
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master = replTest.getPrimary();
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assert(b_conn.host === master.host, "b_conn assumed to be master");
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options = {
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writeConcern: {w: 1, wtimeout: 60000},
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upsert: true
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};
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// another insert to set minvalid ahead
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assert.writeOK(b_conn.getDB(name).foo.insert({x: 123}));
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assert.commandWorked(b_conn.getDB(name).foo.ensureIndex({x: 1}, {unique: true}));
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assert.writeError(b_conn.getDB(name).foo.insert({x: 123}));
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// shut down B and bring back the original master
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replTest.stop(BID);
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replTest.restart(AID);
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master = replTest.getPrimary();
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assert(a_conn.host === master.host, "a_conn assumed to be master");
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// Insert a document with the same value for 'x' that should be
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// propagated successfully to B if the unique index was dropped successfully.
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options = {
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writeConcern: {w: 1, wtimeout: 60000}
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};
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assert.writeOK(a_conn.getDB(name).foo.insert({x: 1}, options));
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assert.eq(2, a_conn.getDB(name).foo.find().itcount(), 'invalid number of documents on A');
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// restart B, which should rollback.
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replTest.restart(BID);
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awaitOpTime(b_conn, getLatestOp(a_conn).ts);
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replTest.awaitReplication();
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replTest.awaitSecondaryNodes();
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// Perform a write that should succeed if there's no unique index on B.
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options = {
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writeConcern: {w: 'majority', wtimeout: 60000}
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};
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assert.writeOK(a_conn.getDB(name).foo.insert({x: 1}, options));
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// Check collections and indexes.
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assert.eq(3,
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b_conn.getDB(name).foo.find().itcount(),
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'Collection on B does not have the same number of documents as A');
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assert.eq(
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a_conn.getDB(name).foo.getIndexes().length,
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b_conn.getDB(name).foo.getIndexes().length,
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'Unique index not dropped during rollback: ' + tojson(b_conn.getDB(name).foo.getIndexes()));
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replTest.stopSet();
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