37 lines
1.5 KiB
JavaScript
37 lines
1.5 KiB
JavaScript
/**
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* Tests queries on views on sharded collections work correctly with readConcern 'available'.
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*/
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const st = new ShardingTest({
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shards: 2,
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});
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const dbName = jsTestName();
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const testDB = st.s.getDB(dbName);
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const collName = "test";
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const fullCollNs = `${dbName}.${collName}`;
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const testColl = testDB.getCollection(collName);
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const viewName = "myView";
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// Shards a collection across the two shards and build a view on top of it.
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assert.commandWorked(
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st.s.adminCommand({enableSharding: dbName, primaryShard: st.shard0.shardName}));
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assert.commandWorked(testDB.adminCommand({shardCollection: fullCollNs, key: {x: 1}}));
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assert.commandWorked(st.splitAt(fullCollNs, {x: 10}));
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assert.commandWorked(st.moveChunk(fullCollNs, {x: 10}, st.shard1.shardName));
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assert.commandWorked(testColl.insert({x: 100}));
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assert.commandWorked(testColl.insert({x: -100}));
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assert.commandWorked(testDB.createView(viewName, collName, []));
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// The command from the router with 'available' readConcern should still retrieve both documents
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// across the two shards.
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assert.eq(testDB.getCollection(viewName).find().readConcern('available').itcount(), 2);
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// Connecting to the primary shard will return the one document there.
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assert.eq(st.shard0.getDB(dbName).getCollection(viewName).find().readConcern('available').itcount(),
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1);
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// Connecting to the non-primary shard will not find the view and return nothing.
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assert.eq(st.shard1.getDB(dbName).getCollection(viewName).find().readConcern('available').itcount(),
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0);
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st.stop(); |