99 lines
2.7 KiB
JavaScript
99 lines
2.7 KiB
JavaScript
// Check that a warning message about doing a capped collection scan for a query with an _id
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// constraint is printed at appropriate times. SERVER-5353
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//
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// @tags: [
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// # The test runs commands that are not allowed with security token: getLog.
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// not_allowed_with_signed_security_token,
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// does_not_support_stepdowns,
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// requires_capped,
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// requires_getmore,
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// ]
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function numWarnings() {
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let logs = db.adminCommand({getLog: "global"}).log;
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let ret = 0;
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logs.forEach(function (x) {
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if (x.match(warningMatchRegexp)) {
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++ret;
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}
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});
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return ret;
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}
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let collectionNameIndex = 0;
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// Generate a collection name not already present in the log.
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do {
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var testCollectionName = "jstests_queryoptimizera__" + collectionNameIndex++;
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let warningMatchString = "unindexed _id query on capped collection.*collection: test." + testCollectionName;
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var warningMatchRegexp = new RegExp(warningMatchString);
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} while (numWarnings() > 0);
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let t = db[testCollectionName];
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t.drop();
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let notCappedCollectionName = testCollectionName + "_notCapped";
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let notCapped = db.getSiblingDB("local").getCollection(notCappedCollectionName);
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notCapped.drop();
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assert.commandWorked(db.createCollection(testCollectionName, {capped: true, size: 1000}));
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assert.commandWorked(notCapped.getDB().createCollection(notCappedCollectionName));
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t.insert({});
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notCapped.insert({});
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let oldNumWarnings = 0;
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function assertNoNewWarnings() {
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assert.eq(oldNumWarnings, numWarnings());
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}
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function assertNewWarning() {
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let newNumWarnings = numWarnings();
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// Ensure that newNumWarnings > oldNumWarnings. It's not safe to test that oldNumWarnings + 1
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// == newNumWarnings, because a (simulated) page fault exception may cause multiple messages to
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// be logged instead of only one.
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assert.lt(oldNumWarnings, newNumWarnings);
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oldNumWarnings = newNumWarnings;
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}
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// Simple _id query
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t.find({_id: 0}).itcount();
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assertNoNewWarnings();
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// Simple _id query without an _id index, on a non capped collection.
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notCapped.find({_id: 0}).itcount();
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assertNoNewWarnings();
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// A multi field query, including _id.
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t.find({_id: 0, a: 0}).itcount();
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assertNoNewWarnings();
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// An unsatisfiable query.
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t.find({_id: 0, a: {$in: []}}).itcount();
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assertNoNewWarnings();
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// An hinted query.
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t.find({_id: 0}).hint({$natural: 1}).itcount();
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assertNoNewWarnings();
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// Retry a multi field query.
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t.find({_id: 0, a: 0}).itcount();
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assertNoNewWarnings();
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// Warnings should not be printed when an index is added on _id.
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t.createIndex({_id: 1});
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t.find({_id: 0}).itcount();
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assertNoNewWarnings();
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t.find({_id: 0, a: 0}).itcount();
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assertNoNewWarnings();
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t.find({_id: 0, a: 0}).itcount();
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assertNoNewWarnings();
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t.drop(); // cleanup
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notCapped.drop();
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