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100 lines
3.6 KiB
JavaScript
100 lines
3.6 KiB
JavaScript
/**
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* Ensures that two manual moveChunk commands for the same collection will proceed in parallel so
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* long as they do not touch the same shards
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*
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* @tags: [
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* # SERVER-62181 avoid CS stepdowns, since they can cause the migrations
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* # (in combination with their failpoints) issued by this test to enter a deadlock
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* does_not_support_stepdowns,
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* ]
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*/
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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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import {findChunksUtil} from "jstests/sharding/libs/find_chunks_util.js";
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// For startParallelOps to write its state
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var staticMongod = MongoRunner.runMongod({});
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var st = new ShardingTest({shards: 4});
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assert.commandWorked(
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st.s0.adminCommand({enableSharding: 'TestDB', primaryShard: st.shard0.shardName}));
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assert.commandWorked(st.s0.adminCommand({shardCollection: 'TestDB.TestColl', key: {Key: 1}}));
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var coll = st.s0.getDB('TestDB').TestColl;
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// Create 4 chunks initially
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assert.commandWorked(coll.insert({Key: 1, Value: 'Test value 1'}));
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assert.commandWorked(coll.insert({Key: 10, Value: 'Test value 10'}));
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assert.commandWorked(coll.insert({Key: 20, Value: 'Test value 20'}));
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assert.commandWorked(coll.insert({Key: 30, Value: 'Test value 30'}));
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assert.commandWorked(st.splitAt('TestDB.TestColl', {Key: 10}));
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assert.commandWorked(st.splitAt('TestDB.TestColl', {Key: 20}));
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assert.commandWorked(st.splitAt('TestDB.TestColl', {Key: 30}));
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// Move two of the chunks to st.shard1.shardName so we have option to do parallel balancing
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assert.commandWorked(st.moveChunk('TestDB.TestColl', {Key: 20}, st.shard1.shardName));
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assert.commandWorked(st.moveChunk('TestDB.TestColl', {Key: 30}, st.shard1.shardName));
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assert.eq(
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2,
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findChunksUtil
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.findChunksByNs(st.s0.getDB('config'), 'TestDB.TestColl', {shard: st.shard0.shardName})
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.itcount());
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assert.eq(
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2,
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findChunksUtil
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.findChunksByNs(st.s0.getDB('config'), 'TestDB.TestColl', {shard: st.shard1.shardName})
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.itcount());
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// Pause migrations at shards 2 and 3
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pauseMigrateAtStep(st.shard2, migrateStepNames.rangeDeletionTaskScheduled);
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pauseMigrateAtStep(st.shard3, migrateStepNames.rangeDeletionTaskScheduled);
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// Both move chunk operations should proceed
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var joinMoveChunk1 = moveChunkParallel(
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staticMongod, st.s0.host, {Key: 10}, null, 'TestDB.TestColl', st.shard2.shardName);
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var joinMoveChunk2 = moveChunkParallel(
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staticMongod, st.s0.host, {Key: 30}, null, 'TestDB.TestColl', st.shard3.shardName);
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waitForMigrateStep(st.shard2, migrateStepNames.rangeDeletionTaskScheduled);
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waitForMigrateStep(st.shard3, migrateStepNames.rangeDeletionTaskScheduled);
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unpauseMigrateAtStep(st.shard2, migrateStepNames.rangeDeletionTaskScheduled);
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unpauseMigrateAtStep(st.shard3, migrateStepNames.rangeDeletionTaskScheduled);
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joinMoveChunk1();
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joinMoveChunk2();
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assert.eq(
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1,
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findChunksUtil
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.findChunksByNs(st.s0.getDB('config'), 'TestDB.TestColl', {shard: st.shard0.shardName})
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.itcount());
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assert.eq(
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1,
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findChunksUtil
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.findChunksByNs(st.s0.getDB('config'), 'TestDB.TestColl', {shard: st.shard1.shardName})
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.itcount());
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assert.eq(
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1,
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findChunksUtil
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.findChunksByNs(st.s0.getDB('config'), 'TestDB.TestColl', {shard: st.shard2.shardName})
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.itcount());
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assert.eq(
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1,
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findChunksUtil
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.findChunksByNs(st.s0.getDB('config'), 'TestDB.TestColl', {shard: st.shard3.shardName})
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.itcount());
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st.stop();
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MongoRunner.stopMongod(staticMongod);
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