mirror of https://github.com/mongodb/mongo
59 lines
2.1 KiB
JavaScript
59 lines
2.1 KiB
JavaScript
/**
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* Tests that when the current sync source no longer meets the strict criteria for being a sync
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* source, and there is another node which does meet those criteria, we will change sync source
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* (eventually).
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*/
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import {assertSyncSourceChangesTo} from "jstests/replsets/libs/sync_source.js";
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import {reconfig} from "jstests/replsets/rslib.js";
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// Replication verbosity 2 includes the sync source change debug logs.
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TestData["setParameters"]["logComponentVerbosity"]["replication"]["verbosity"] = 2;
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// Start RST with only one voting node, node 0 -- this will be the only valid voting node and sync
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// source
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const rst = new ReplSetTest({nodes: [{}, {rsConfig: {priority: 0, votes: 0}}]});
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rst.startSet();
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rst.initiate();
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// Make sure that node 0 is primary as expected
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const primary = rst.getPrimary();
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assert.eq(primary, rst.nodes[0]);
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// Add a new voting node, node 2 -- voting nodes will choose voting nodes as sync sources.
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jsTestLog("Adding node 2");
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const newNode = rst.add({});
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rst.reInitiate();
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rst.waitForState(newNode, ReplSetTest.State.SECONDARY);
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rst.awaitReplication();
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rst.awaitSecondaryNodes();
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// Wait for the new node to no longer be newlyAdded, so that it becomes a voting node.
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rst.waitForAllNewlyAddedRemovals();
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// Assure that node 2 will set node 0 as its sync source, since it is the best option.
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assertSyncSourceChangesTo(rst, newNode, rst.nodes[0]);
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// Make node 1 a voter so that it will be a valid option for sync source
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let cfg = rst.getReplSetConfigFromNode();
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cfg.members[1].priority = 1;
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cfg.members[1].votes = 1;
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reconfig(rst, cfg);
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// Force a stepup of node 1 -- we need to step node 0 down so that we can set it as a non-voter
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// without causing errors.
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jsTestLog("Stepping up node 1");
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rst.stepUp(rst.nodes[1]);
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jsTestLog("Reconfiguring node 0 as nonvoter");
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// Make node 0 a nonvoter so that it will be an invalid option for sync source
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cfg = rst.getReplSetConfigFromNode();
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cfg.members[0].priority = 0;
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cfg.members[0].votes = 0;
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reconfig(rst, cfg);
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jsTestLog("Reconfig complete");
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assertSyncSourceChangesTo(rst, newNode, rst.nodes[1]);
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rst.stopSet();
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