mirror of https://github.com/mongodb/mongo
48 lines
1.7 KiB
JavaScript
48 lines
1.7 KiB
JavaScript
// Tests that merging chunks does not prevent cluster from doing other metadata ops
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import {ShardingTest} from "jstests/libs/shardingtest.js";
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let st = new ShardingTest({shards: 2});
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let mongos = st.s0;
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let admin = mongos.getDB("admin");
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const kDbName = "foo";
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assert.commandWorked(admin.runCommand({enableSharding: kDbName + "", primaryShard: st.shard0.shardName}));
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let coll = mongos.getCollection(kDbName + ".bar");
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assert.commandWorked(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}));
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st.printShardingStatus();
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// Split and merge the first chunk repeatedly
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jsTest.log("Splitting and merging repeatedly...");
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for (var i = 0; i < 5; i++) {
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assert.commandWorked(admin.runCommand({split: coll + "", middle: {_id: i}}));
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assert.commandWorked(admin.runCommand({mergeChunks: coll + "", bounds: [{_id: MinKey}, {_id: MaxKey}]}));
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printjson(mongos.getDB("config").chunks.find().toArray());
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}
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// Move the first chunk to the other shard
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jsTest.log("Moving to another shard...");
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assert.commandWorked(admin.runCommand({moveChunk: coll + "", find: {_id: 0}, to: st.shard1.shardName}));
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// Split and merge the chunk repeatedly
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jsTest.log("Splitting and merging repeatedly (again)...");
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for (var i = 0; i < 5; i++) {
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assert.commandWorked(admin.runCommand({split: coll + "", middle: {_id: i}}));
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assert.commandWorked(admin.runCommand({mergeChunks: coll + "", bounds: [{_id: MinKey}, {_id: MaxKey}]}));
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printjson(mongos.getDB("config").chunks.find().toArray());
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}
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// Move the chunk back to the original shard
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jsTest.log("Moving to original shard...");
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assert.commandWorked(admin.runCommand({moveChunk: coll + "", find: {_id: 0}, to: st.shard0.shardName}));
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st.printShardingStatus();
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st.stop();
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