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83 lines
3.5 KiB
JavaScript
83 lines
3.5 KiB
JavaScript
// When a migration is in progress from shard0 to shard1 on coll1, shard2 is unable to start a
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// migration with either shard in the following cases:
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// 1. coll2 shard0 to shard2 -- shard0 can't send two chunks simultaneously.
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// 2. coll2 shard2 to shard1 -- shard1 can't receive two chunks simultaneously.
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import {
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migrateStepNames,
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moveChunkParallel,
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pauseMigrateAtStep,
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unpauseMigrateAtStep,
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waitForMigrateStep,
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} from "jstests/libs/chunk_manipulation_util.js";
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import {ShardingTest} from "jstests/libs/shardingtest.js";
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var staticMongod = MongoRunner.runMongod({});
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var st = new ShardingTest({shards: 3});
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var mongos = st.s0, admin = mongos.getDB('admin'), dbName = "testDB", ns1 = dbName + ".foo",
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coll1 = mongos.getCollection(ns1), shard0 = st.shard0, shard1 = st.shard1, shard2 = st.shard2,
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shard0Coll1 = shard0.getCollection(ns1), shard1Coll1 = shard1.getCollection(ns1),
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shard2Coll1 = shard2.getCollection(ns1);
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assert.commandWorked(admin.runCommand({enableSharding: dbName, primaryShard: st.shard0.shardName}));
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assert.commandWorked(admin.runCommand({shardCollection: ns1, key: {a: 1}}));
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assert.commandWorked(admin.runCommand({split: ns1, middle: {a: 0}}));
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assert.commandWorked(admin.runCommand({split: ns1, middle: {a: 10}}));
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assert.commandWorked(coll1.insert({a: -10}));
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assert.commandWorked(coll1.insert({a: 0}));
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assert.commandWorked(coll1.insert({a: 10}));
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assert.eq(3, shard0Coll1.find().itcount());
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assert.eq(0, shard1Coll1.find().itcount());
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assert.eq(0, shard2Coll1.find().itcount());
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assert.eq(3, coll1.find().itcount());
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assert.commandWorked(admin.runCommand(
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{moveChunk: ns1, find: {a: 10}, to: st.shard2.shardName, _waitForDelete: true}));
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// Shard0:
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// coll1: [-inf, 0) [0, 10)
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// Shard1:
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// Shard2:
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// coll1: [10, +inf)
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jsTest.log("Set up complete, now proceeding to test that migration interruptions fail.");
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// Start a migration between shard0 and shard1 on coll1 and then pause it
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pauseMigrateAtStep(shard1, migrateStepNames.rangeDeletionTaskScheduled);
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var joinMoveChunk = moveChunkParallel(staticMongod,
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st.s0.host,
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{a: 0},
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null,
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coll1.getFullName(),
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st.shard1.shardName,
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true /**Parallel should expect success */);
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waitForMigrateStep(shard1, migrateStepNames.rangeDeletionTaskScheduled);
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assert.commandFailedWithCode(
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admin.runCommand({moveChunk: ns1, find: {a: -10}, to: st.shard2.shardName}),
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ErrorCodes.ConflictingOperationInProgress,
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"(1) A shard should not be able to be the donor for two ongoing migrations.");
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assert.commandFailedWithCode(
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admin.runCommand({moveChunk: ns1, find: {a: 10}, to: st.shard1.shardName}),
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ErrorCodes.ConflictingOperationInProgress,
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"(2) A shard should not be able to be the recipient of two ongoing migrations.");
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assert.commandFailedWithCode(
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admin.runCommand({moveChunk: ns1, find: {a: 10}, to: st.shard0.shardName}),
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ErrorCodes.ConflictingOperationInProgress,
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"(3) A shard should not be able to be both a donor and recipient of migrations.");
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// Finish migration
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unpauseMigrateAtStep(shard1, migrateStepNames.rangeDeletionTaskScheduled);
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joinMoveChunk();
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assert.eq(1, shard0Coll1.find().itcount());
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assert.eq(1, shard1Coll1.find().itcount());
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assert.eq(1, shard2Coll1.find().itcount());
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st.stop();
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MongoRunner.stopMongod(staticMongod);
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