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/**
* Tests that a multi-oplog batched multi delete operation can be rolled back.
* @tags: [
* requires_fcv_70,
* requires_replication,
* ]
*/
(function() {
'use strict';
load('jstests/replsets/libs/rollback_test.js');
load("jstests/libs/feature_flag_util.js"); // for FeatureFlagUtil.isEnabled
// Operations that will be present on both nodes, before the common point.
const dbName = 'test';
const collName = 'test.t';
const collNameShort = 't';
const docIds = [0, 1, 2, 3];
let CommonOps = (node) => {
const coll = node.getCollection(collName);
assert.commandWorked(coll.insert(docIds.map((x) => {
return {_id: x, x: x};
})));
};
// Operations that will be performed on the rollback node past the common point.
let RollbackOps = (node, rst) => {
jsTestLog("NODE PORT: " + node.port);
const coll = node.getCollection(collName);
const result = assert.commandWorked(coll.remove({}));
jsTestLog('delete result: ' + tojson(result));
assert.eq(result.nRemoved, docIds.length);
assert.eq(coll.countDocuments({}), 0);
// Check oplog entries generated for the large batched write.
// Query returns any oplog entries where the applyOps array contains an operation with a
// namespace matching the test collection namespace. Oplog entries will be returned in reverse
// timestamp order (most recent first).
const ops = rst.findOplog(node, {
op: 'c',
ns: 'admin.$cmd',
'o.applyOps': {$elemMatch: {op: 'd', ns: coll.getFullName()}}
})
.toArray();
jsTestLog('applyOps oplog entries: ' + tojson(ops));
assert.eq(2, ops.length, 'Should have two applyOps oplog entries');
const deletedDocIds = ops.map((entry) => entry.o.applyOps.map((op) => op.o._id)).flat();
jsTestLog('deleted doc _ids: ' + tojson(deletedDocIds));
assert.sameMembers(deletedDocIds, docIds);
};
// Set up Rollback Test.
const nodeOptions = {
setParameter: {
// On a slow machine, the default of 5 ms for 'batchedDeletesTargetBatchTimeMS'
// may cause the batched delete stage to break up the delete operation into
// smaller batches that not allow us to test the effect of
// 'maxNumberOfBatchedOperationsInSingleOplogEntry' on
// OpObserver::onBatchedWriteCommit().
// Setting 'batchedDeletesTargetBatchTimeMS' to zero (for unlimited) ensures that
// the delete stage will alway put all the requested deletes in a single batch.
batchedDeletesTargetBatchTimeMS: 0,
maxNumberOfBatchedOperationsInSingleOplogEntry: 2,
},
};
const rollbackTest = new RollbackTest(jsTestName(), /*replSet=*/undefined, nodeOptions);
if (!FeatureFlagUtil.isEnabled(rollbackTest.getPrimary(),
"InternalWritesAreReplicatedTransactionally")) {
jsTestLog('Skipping test because required feature flag is not enabled.');
rollbackTest.stop();
return;
}
CommonOps(rollbackTest.getPrimary());
const rollbackNode = rollbackTest.transitionToRollbackOperations();
const rst = rollbackTest.getTestFixture();
RollbackOps(rollbackNode, rst);
// Wait for rollback to finish.
rollbackTest.transitionToSyncSourceOperationsBeforeRollback();
rollbackTest.transitionToSyncSourceOperationsDuringRollback();
rollbackTest.transitionToSteadyStateOperations();
// Check collection count.
const primary = rollbackTest.getPrimary();
const coll = primary.getCollection(collName);
assert.eq(docIds.length, coll.countDocuments({}));
rollbackTest.stop();
})();
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