57 lines
1.8 KiB
JavaScript
57 lines
1.8 KiB
JavaScript
/**
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* Test migrating a big chunk while deletions are happening within that chunk. Test is slightly
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* non-deterministic, since removes could happen before migrate starts. Protect against that by
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* making chunk very large.
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*
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* This test is labeled resource intensive because its total io_write is 88MB compared to a median
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* of 5MB across all sharding tests in wiredTiger.
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* @tags: [resource_intensive]
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*/
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import {ShardingTest} from "jstests/libs/shardingtest.js";
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var st = new ShardingTest({
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shards: 2,
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mongos: 1,
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rs: {nodes: 2, setParameter: {defaultConfigCommandTimeoutMS: 5 * 60 * 1000}}
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});
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var dbname = "test";
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var coll = "foo";
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var ns = dbname + "." + coll;
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assert.commandWorked(
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st.s0.adminCommand({enablesharding: dbname, primaryShard: st.shard1.shardName}));
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var t = st.s0.getDB(dbname).getCollection(coll);
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var bulk = t.initializeUnorderedBulkOp();
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const numDocs = 200000;
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for (var i = 0; i < numDocs; i++) {
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bulk.insert({a: i});
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}
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assert.commandWorked(bulk.execute());
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// enable sharding of the collection. Only 1 chunk.
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t.createIndex({a: 1});
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assert.commandWorked(st.s0.adminCommand({shardcollection: ns, key: {a: 1}}));
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// start a parallel shell that deletes things
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var join = startParallelShell("db." + coll + ".remove({});", st.s0.port);
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// migrate while deletions are happening
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const res = st.s0.adminCommand(
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{moveChunk: ns, find: {a: 1}, to: st.getOther(st.getPrimaryShard(dbname)).name});
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if (res.code == ErrorCodes.CommandFailed &&
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res.errmsg.includes("timed out waiting for the catch up completion")) {
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jsTest.log("Ignoring the critical section timeout error since this test deletes " + numDocs +
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" documents in the chunk being migrated " + tojson(res));
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} else {
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assert.commandWorked(res);
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}
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join();
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st.stop();
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