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69 lines
2.8 KiB
JavaScript
69 lines
2.8 KiB
JavaScript
import {ReplSetTest} from "jstests/libs/replsettest.js";
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import {ShardTransitionUtil} from "jstests/libs/shard_transition_util.js";
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import {ShardingTest} from "jstests/libs/shardingtest.js";
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var s = new ShardingTest({shards: 2, other: {enableBalancer: true}});
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var config = s.s0.getDB('config');
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assert.commandWorked(
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s.s0.adminCommand({enableSharding: 'needToMove', primaryShard: s.shard0.shardName}));
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// Returns an error when trying to remove a shard that doesn't exist.
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assert.commandFailedWithCode(s.s0.adminCommand({removeshard: "shardz"}), ErrorCodes.ShardNotFound);
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var topologyTime0 = config.shards.findOne({_id: s.shard0.shardName}).topologyTime;
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var topologyTime1 = config.shards.findOne({_id: s.shard1.shardName}).topologyTime;
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assert.gt(topologyTime1, topologyTime0);
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// removeShard is not permited on shard0 (the configShard) if configShard is enabled, so we want
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// to use transitionToDedicatedConfigServer instead
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var removeShardOrTransitionToDedicated =
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TestData.configShard ? "transitionToDedicatedConfigServer" : "removeShard";
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// First remove puts in draining mode, the second tells me a db needs to move, the third
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// actually removes
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assert.commandWorked(s.s0.adminCommand({[removeShardOrTransitionToDedicated]: s.shard0.shardName}));
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// Can't make all shards in the cluster draining
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assert.commandFailedWithCode(s.s0.adminCommand({removeshard: s.shard1.shardName}),
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ErrorCodes.IllegalOperation);
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var removeResult = assert.commandWorked(
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s.s0.adminCommand({[removeShardOrTransitionToDedicated]: s.shard0.shardName}));
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assert.eq(removeResult.dbsToMove, ['needToMove'], "didn't show db to move");
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assert(removeResult.note !== undefined);
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s.s0.getDB('needToMove').dropDatabase();
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// Ensure the balancer moves the config.system.sessions collection chunks out of the shard being
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// removed
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s.awaitBalancerRound();
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if (TestData.configShard) {
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// A config shard can't be removed until all range deletions have finished.
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ShardTransitionUtil.waitForRangeDeletions(s.s);
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}
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removeResult = assert.commandWorked(
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s.s0.adminCommand({[removeShardOrTransitionToDedicated]: s.shard0.shardName}));
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assert.eq('completed', removeResult.state, 'Shard was not removed: ' + tojson(removeResult));
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var existingShards = config.shards.find({}).toArray();
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assert.eq(
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1, existingShards.length, "Removed server still appears in count: " + tojson(existingShards));
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var topologyTime2 = existingShards[0].topologyTime;
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assert.gt(topologyTime2, topologyTime1);
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assert.commandFailed(s.s0.adminCommand({removeshard: s.shard1.shardName}));
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// Should create a shard0002 shard
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const rs = new ReplSetTest({nodes: 1});
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rs.startSet({shardsvr: ""});
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rs.initiate();
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assert.commandWorked(s.s0.adminCommand({addshard: rs.getURL()}));
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assert.eq(2, s.config.shards.count(), "new server does not appear in count");
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rs.stopSet();
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s.stop();
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