76 lines
2.9 KiB
JavaScript
76 lines
2.9 KiB
JavaScript
/**
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* This test is meant to test that a migration will correctly wait for the majority commit point
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* when there are no transfer mod writes (SERVER-42783).
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* @tags: [requires_find_command, requires_majority_read_concern]
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*/
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(function() {
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"use strict";
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load('./jstests/libs/chunk_manipulation_util.js');
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// Set up a sharded cluster with two shards, two chunks, and one document in one of the chunks.
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const st = new ShardingTest({shards: 2, rs: {nodes: 2}, config: 1});
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const testDB = st.s.getDB("test");
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assert.commandWorked(testDB.foo.insert({_id: 1}, {writeConcern: {w: "majority"}}));
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st.ensurePrimaryShard("test", st.shard0.shardName);
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assert.commandWorked(st.s.adminCommand({enableSharding: "test"}));
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assert.commandWorked(st.s.adminCommand({shardCollection: "test.foo", key: {_id: 1}}));
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assert.commandWorked(st.s.adminCommand({split: "test.foo", middle: {_id: 0}}));
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// The document is in the majority committed snapshot.
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assert.eq(1, testDB.foo.find().readConcern("majority").itcount());
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// Advance a migration to the beginning of the cloning phase.
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pauseMigrateAtStep(st.rs1.getPrimary(), 2);
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// For startParallelOps to write its state
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let staticMongod = MongoRunner.runMongod({});
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let awaitMigration = moveChunkParallel(staticMongod,
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st.s.host,
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{_id: 1},
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null,
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"test.foo",
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st.shard1.shardName,
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false /* expectSuccess */);
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// Wait for the migration to reach the failpoint and allow any writes to become majority committed
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// before pausing replication.
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waitForMigrateStep(st.rs1.getPrimary(), 2);
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st.rs1.awaitLastOpCommitted();
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// Disable replication on the recipient shard's secondary node, so the recipient shard's majority
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// commit point cannot advance.
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const destinationSec = st.rs1.getSecondary();
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assert.commandWorked(
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destinationSec.adminCommand({configureFailPoint: "rsSyncApplyStop", mode: "alwaysOn"}),
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"failed to enable fail point on secondary");
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// Allow the migration to begin cloning.
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unpauseMigrateAtStep(st.rs1.getPrimary(), 2);
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// Check the migration coordinator document, because the moveChunk command itself
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// will hang on trying to remove the recipient's range deletion entry with majority writeConcern
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// until replication is re-enabled on the recipient.
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assert.soon(() => {
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return st.rs0.getPrimary().getDB("config").getCollection("migrationCoordinators").findOne({
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nss: "test.foo",
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"range.min._id": 0,
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"range.max._id": MaxKey,
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decision: "aborted",
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}) != null;
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});
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assert.commandWorked(
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destinationSec.adminCommand({configureFailPoint: "rsSyncApplyStop", mode: "off"}),
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"failed to enable fail point on secondary");
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awaitMigration();
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st.stop();
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MongoRunner.stopMongod(staticMongod);
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})();
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