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/**
* Verifies that the data consistency checks work against the variety of cluster types we use in our
* testing.
*
* @tags: [
* requires_replication,
* requires_sharding,
* ]
*/
// The global 'db' variable is used by the data consistency hooks.
var db;
(function() {
"use strict";
// We skip doing the data consistency checks while terminating the cluster because they conflict
// with the counts of the number of times the "dbhash" and "validate" commands are run.
TestData.skipCollectionAndIndexValidation = true;
TestData.skipCheckDBHashes = true;
function makePatternForDBHash(dbName) {
return new RegExp(
`Slow query.*"ns":"${dbName}\\.\\$cmd","appName":"MongoDB Shell","command":{"db[Hh]ash`,
"g");
}
function makePatternForValidate(dbName, collName) {
return new RegExp(
`Slow query.*"ns":"${dbName}\\.\\$cmd","appName":"MongoDB Shell","command":{"validate":"${
collName}"`,
"g");
}
function countMatches(pattern, output) {
assert(pattern.global, "the 'g' flag must be used to find all matches");
let numMatches = 0;
while (pattern.exec(output) !== null) {
++numMatches;
}
return numMatches;
}
function runDataConsistencyChecks(testCase) {
db = testCase.conn.getDB("test");
try {
clearRawMongoProgramOutput();
load("jstests/hooks/run_check_repl_dbhash.js");
load("jstests/hooks/run_validate_collections.js");
// We terminate the processes to ensure that the next call to rawMongoProgramOutput()
// will return all of their output.
testCase.teardown();
return rawMongoProgramOutput();
} finally {
db = undefined;
}
}
(function testReplicaSetWithVotingSecondaries() {
const numNodes = 2;
const rst = new ReplSetTest({
nodes: numNodes,
nodeOptions: {
setParameter: {logComponentVerbosity: tojson({command: 1})},
}
});
rst.startSet();
rst.initiateWithNodeZeroAsPrimary();
// Insert a document so the "dbhash" and "validate" commands have some actual work to do.
assert.commandWorked(rst.nodes[0].getDB("test").mycoll.insert({}));
const output = runDataConsistencyChecks({conn: rst.nodes[0], teardown: () => rst.stopSet()});
let pattern = makePatternForDBHash("test");
assert.eq(numNodes,
countMatches(pattern, output),
"expected to find " + tojson(pattern) + " from each node in the log output");
pattern = makePatternForValidate("test", "mycoll");
assert.eq(numNodes,
countMatches(pattern, output),
"expected to find " + tojson(pattern) + " from each node in the log output");
})();
(function testReplicaSetWithNonVotingSecondaries() {
const numNodes = 2;
const rst = new ReplSetTest({
nodes: numNodes,
nodeOptions: {
setParameter: {logComponentVerbosity: tojson({command: 1})},
}
});
rst.startSet();
const replSetConfig = rst.getReplSetConfig();
for (let i = 1; i < numNodes; ++i) {
replSetConfig.members[i].priority = 0;
replSetConfig.members[i].votes = 0;
}
rst.initiate(replSetConfig);
// Insert a document so the "dbhash" and "validate" commands have some actual work to do.
assert.commandWorked(rst.nodes[0].getDB("test").mycoll.insert({}));
const output = runDataConsistencyChecks({conn: rst.nodes[0], teardown: () => rst.stopSet()});
let pattern = makePatternForDBHash("test");
assert.eq(numNodes,
countMatches(pattern, output),
"expected to find " + tojson(pattern) + " from each node in the log output");
pattern = makePatternForValidate("test", "mycoll");
assert.eq(numNodes,
countMatches(pattern, output),
"expected to find " + tojson(pattern) + " from each node in the log output");
})();
(function testShardedClusterWithOneNodeCSRS() {
const st = new ShardingTest({
mongos: 1,
config: 1,
configOptions: {
setParameter: {logComponentVerbosity: tojson({command: 1})},
},
shards: 1
});
// We shard a collection in order to guarantee that at least one collection on the "config"
// database exists for when we go to run the data consistency checks against the CSRS.
st.shardColl(st.s.getDB("test").mycoll, {_id: 1}, false);
const output = runDataConsistencyChecks({conn: st.s, teardown: () => st.stop()});
let pattern = makePatternForDBHash("config");
assert.eq(0,
countMatches(pattern, output),
"expected not to find " + tojson(pattern) + " in the log output for 1-node CSRS");
// The choice of using the "config.collections" collection here is mostly arbitrary as the
// "config.databases" and "config.chunks" collections are also implicitly created as part of
// sharding a collection.
pattern = makePatternForValidate("config", "collections");
assert.eq(1,
countMatches(pattern, output),
"expected to find " + tojson(pattern) + " in the log output for 1-node CSRS");
})();
(function testShardedCluster() {
const st = new ShardingTest({
mongos: 1,
config: 3,
configOptions: {
setParameter: {logComponentVerbosity: tojson({command: 1})},
},
shards: 1,
rs: {nodes: 2},
rsOptions: {
setParameter: {logComponentVerbosity: tojson({command: 1})},
}
});
// We shard a collection in order to guarantee that at least one collection on the "config"
// database exists for when we go to run the data consistency checks against the CSRS.
st.shardColl(st.s.getDB("test").mycoll, {_id: 1}, false);
// Insert a document so the "dbhash" and "validate" commands have some actual work to do on
// the replica set shard.
assert.commandWorked(st.s.getDB("test").mycoll.insert({_id: 0}));
const output = runDataConsistencyChecks({conn: st.s, teardown: () => st.stop()});
// The "config" database exists on both the CSRS and the replica set shards due to the
// "config.transactions" collection.
let pattern = makePatternForDBHash("config");
assert.eq(5,
countMatches(pattern, output),
"expected to find " + tojson(pattern) +
" from each CSRS node and each replica set shard node in the log output");
// The choice of using the "config.collections" collection here is mostly arbitrary as the
// "config.databases" and "config.chunks" collections are also implicitly created as part of
// sharding a collection.
pattern = makePatternForValidate("config", "collections");
assert.eq(3,
countMatches(pattern, output),
"expected to find " + tojson(pattern) + " from each CSRS node in the log output");
pattern = makePatternForDBHash("test");
assert.eq(2,
countMatches(pattern, output),
"expected to find " + tojson(pattern) +
" from each replica set shard node in the log output");
pattern = makePatternForValidate("test", "mycoll");
assert.eq(2,
countMatches(pattern, output),
"expected to find " + tojson(pattern) +
" from each replica set shard node in the log output");
})();
})();
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