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// Test killop applied to m/r operations and child ops of m/r operations.
// The test runs commands that are not allowed with security token: killOp, mapreduce.
// @tags: [
// not_allowed_with_security_token,
// # mapReduce does not support afterClusterTime.
// does_not_support_causal_consistency,
// does_not_support_stepdowns,
// uses_map_reduce_with_temp_collections,
// uses_multiple_connections,
// uses_parallel_shell,
// no_selinux,
// ]
(function() {
"use strict";
const source = db.jstests_mr_killop;
source.drop();
const out = db.jstests_mr_killop_out;
out.drop();
assert.commandWorked(db.adminCommand({configureFailPoint: "mr_killop_test_fp", mode: "alwaysOn"}));
/** @return op code for map reduce op created by spawned shell. */
function getOpCode() {
const inProg = db.currentOp().inprog;
function isMapReduce(op) {
if (!op.command) {
return false;
}
const cmdBody = op.command;
if (cmdBody.$truncated) {
const stringifiedCmd = cmdBody.$truncated;
return (stringifiedCmd.search('mapreduce') >= 0 ||
stringifiedCmd.search('aggregate') >= 0) &&
stringifiedCmd.search(source.getName()) >= 0;
}
return (cmdBody.mapreduce && cmdBody.mapreduce == source.getName()) ||
(cmdBody.isMapReduceCommand && cmdBody.aggregate == source.getName());
}
for (let i in inProg) {
const o = inProg[i];
// Identify a map/reduce operation by its collection, whether or not it is currently active.
if ((o.active || o.waitingForLock) && isMapReduce(o))
return o.opid;
}
return -1;
}
/**
* Run one mapReduce with the specified parameters in a parallel shell. Kill the map reduce op and
* wait for the map reduce op to terminate.
*/
function runTest(map, reduce, finalize, scope, wait) {
source.drop();
out.drop();
// Ensure we have 2 documents for the reduce to run.
assert.commandWorked(source.insert({a: 1}));
assert.commandWorked(source.insert({a: 1}));
const spec = {mapreduce: source.getName(), out: out.getName(), map: map, reduce: reduce};
if (finalize) {
spec["finalize"] = finalize;
}
if (scope) {
spec["scope"] = scope;
}
// Windows shell strips all double quotes from command line, so use single quotes.
const stringifiedSpec = tojson(spec).toString().replace(/\n/g, ' ').replace(/\"/g, "\'");
// The assert below won't be caught by this test script, but it will cause error messages to be
// printed.
const awaitShell =
startParallelShell("assert.commandWorked( db.runCommand( " + stringifiedSpec + " ) );");
if (wait) {
sleep(20);
}
let opCode = null;
assert.soon(function() {
opCode = getOpCode();
return opCode != -1;
});
db.killOp(opCode);
// When the map reduce op is killed, the spawned shell will exit
const exitCode = awaitShell({checkExitSuccess: false});
assert.neq(0,
exitCode,
"expected shell to exit abnormally due to map-reduce execution being terminated");
assert.eq(-1, getOpCode());
}
/** Test using wait and non wait modes. */
function runTests(map, reduce, finalize, scope) {
runTest(map, reduce, finalize, scope, false);
runTest(map, reduce, finalize, scope, true);
}
/** Test looping in map function. */
function runMapTests(loop) {
// Without scope.
runTests(
loop, // map
function(k, v) {
return v[0];
}, // reduce
null, // finalize
null // scope
);
// With scope.
runTests(
function() {
loop();
}, // map
function(k, v) {
return v[0];
}, // reduce
null, // finalize
{loop: loop} // scope
);
}
/** Test looping in reduce function. */
function runReduceTests(loop) {
// Without scope.
runTests(
function() {
emit(this.a, 1);
}, // map
loop, // reduce
null, // finalize
null // scope
);
// With scope.
runTests(
function() {
emit(this.a, 1);
}, // map
function() {
loop();
}, // reduce
null, // finalize
{loop: loop} // scope
);
}
/** Test looping in finalize function. */
function runFinalizeTests(loop) {
// Without scope.
runTests(
function() {
emit(this.a, 1);
}, // map
function(k, v) {
return v[0];
}, // reduce
loop, // finalize
null // scope
);
// With scope.
runTests(
function() {
emit(this.a, 1);
}, // map
function(k, v) {
return v[0];
}, // reduce
function(a, b) {
loop();
}, // finalize
{loop: loop} // scope
);
}
const loop = function() {
while (1) {
sleep(10);
}
};
runMapTests(loop, false);
runReduceTests(loop, false);
runFinalizeTests(loop, false);
db.adminCommand({configureFailPoint: "mr_killop_test_fp", mode: "off"});
}());
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