115 lines
4.1 KiB
JavaScript
115 lines
4.1 KiB
JavaScript
/**
|
|
* Exercises the coordinator commands logic to test if a primary exits drain mode after the primary
|
|
* steps down during a basic two phase commit.
|
|
*
|
|
* @tags: [uses_transactions, uses_prepare_transaction, uses_multi_shard_transaction,
|
|
* multiversion_incompatible]
|
|
*/
|
|
|
|
import {configureFailPoint} from "jstests/libs/fail_point_util.js";
|
|
import {ReplSetTest} from "jstests/libs/replsettest.js";
|
|
import {ShardingTest} from "jstests/libs/shardingtest.js";
|
|
import {
|
|
checkDecisionIs,
|
|
checkDocumentDeleted,
|
|
runCommitThroughMongosInParallelThread,
|
|
} from "jstests/sharding/libs/txn_two_phase_commit_util.js";
|
|
|
|
const dbName = "test";
|
|
const collName = "foo";
|
|
const ns = dbName + "." + collName;
|
|
|
|
let st = new ShardingTest({shards: 3, causallyConsistent: true});
|
|
|
|
let coordinator = st.shard0;
|
|
let participant1 = st.shard1;
|
|
let participant2 = st.shard2;
|
|
|
|
let lsid = {id: UUID()};
|
|
let txnNumber = 0;
|
|
|
|
const setUp = function () {
|
|
// Create a sharded collection with a chunk on each shard:
|
|
// shard0: [-inf, 0)
|
|
// shard1: [0, 10)
|
|
// shard2: [10, +inf)
|
|
assert.commandWorked(st.s.adminCommand({enableSharding: dbName, primaryShard: coordinator.shardName}));
|
|
assert.commandWorked(st.s.adminCommand({shardCollection: ns, key: {_id: 1}}));
|
|
assert.commandWorked(st.s.adminCommand({split: ns, middle: {_id: 0}}));
|
|
assert.commandWorked(st.s.adminCommand({split: ns, middle: {_id: 10}}));
|
|
assert.commandWorked(st.s.adminCommand({moveChunk: ns, find: {_id: 0}, to: participant1.shardName}));
|
|
assert.commandWorked(st.s.adminCommand({moveChunk: ns, find: {_id: 10}, to: participant2.shardName}));
|
|
|
|
// Start a new transaction by inserting a document onto each shard.
|
|
assert.commandWorked(
|
|
st.s.getDB(dbName).runCommand({
|
|
insert: collName,
|
|
documents: [{_id: -5}, {_id: 5}, {_id: 15}],
|
|
lsid: lsid,
|
|
txnNumber: NumberLong(txnNumber),
|
|
stmtId: NumberInt(0),
|
|
startTransaction: true,
|
|
autocommit: false,
|
|
}),
|
|
);
|
|
};
|
|
|
|
const testCommitProtocol = function () {
|
|
jsTest.log("Testing two-phase commit");
|
|
|
|
txnNumber++;
|
|
setUp();
|
|
|
|
const coordinatorPrimary = coordinator.rs.getPrimary();
|
|
|
|
const hangBeforeWaitingForDecisionWriteConcernFp = configureFailPoint(
|
|
coordinatorPrimary,
|
|
"hangBeforeWaitingForDecisionWriteConcern",
|
|
{},
|
|
"alwaysOn",
|
|
);
|
|
|
|
const commitThread = runCommitThroughMongosInParallelThread(lsid, txnNumber, st.s.host);
|
|
commitThread.start();
|
|
|
|
// Check that the coordinator wrote the decision.
|
|
hangBeforeWaitingForDecisionWriteConcernFp.wait();
|
|
const commitTimestamp = checkDecisionIs(coordinator, lsid, txnNumber, "commit");
|
|
|
|
assert.commandWorked(coordinatorPrimary.adminCommand({replSetStepDown: ReplSetTest.kForeverSecs, force: true}));
|
|
// The replSetFreeze command will cause the node to run for primary on its own.
|
|
assert.commandWorked(coordinatorPrimary.adminCommand({replSetFreeze: 0}));
|
|
|
|
// The primary won't be able to exit drain mode while the
|
|
// hangBeforeWaitingForDecisionWriteConcern failpoint is active.
|
|
coordinator.rs.waitForState(coordinatorPrimary, ReplSetTest.State.PRIMARY);
|
|
const helloRes = assert.commandWorked(coordinatorPrimary.adminCommand("hello"));
|
|
assert.eq(false, helloRes.isWritablePrimary, helloRes);
|
|
hangBeforeWaitingForDecisionWriteConcernFp.off();
|
|
// However after the hangBeforeWaitingForDecisionWriteConcern failpoint is disabled the primary
|
|
// is expected to exit drain mode.
|
|
|
|
commitThread.join();
|
|
|
|
// Check that the coordinator deleted its persisted state.
|
|
assert.soon(function () {
|
|
return checkDocumentDeleted(coordinator, lsid, txnNumber);
|
|
});
|
|
|
|
// Check that the transaction committed as expected.
|
|
|
|
jsTest.log("Verify that the transaction was committed on all shards.");
|
|
const res = assert.commandWorked(
|
|
st.s.getDB(dbName).runCommand({
|
|
find: collName,
|
|
readConcern: {level: "majority", afterClusterTime: commitTimestamp},
|
|
maxTimeMS: 10000,
|
|
}),
|
|
);
|
|
assert.eq(3, res.cursor.firstBatch.length);
|
|
};
|
|
|
|
testCommitProtocol();
|
|
|
|
st.stop();
|