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//
// Tests whether sharded GLE fails sanely and correctly reports failures.
//
function waitForWrite(shardIndex, query, count) {
var searchText = tojson(query) + " on shard " + shardIndex;
jsTest.log( "Waiting for " + count + " document(s) with " + searchText );
var shardDB = connect(shards[shardIndex].host + "/" + jsTestName());
assert.soon( function() { return shardDB.coll.find( query ).count() == count; },
"Failed to find document with " + searchText,
/* timeout */ 10 * 1000,
/*interval*/ 10 );
}
jsTest.log( "Starting sharded cluster..." )
var st = new ShardingTest({ shards : 3,
mongos : 2,
verbose : 3,
other : { separateConfig : true } })
st.stopBalancer()
var mongos = st.s0
var admin = mongos.getDB( "admin" )
var config = mongos.getDB( "config" )
var coll = mongos.getCollection( jsTestName() + ".coll" )
var shards = config.shards.find().toArray()
jsTest.log( "Enabling sharding..." )
printjson( admin.runCommand({ enableSharding : "" + coll.getDB() }) )
printjson( admin.runCommand({ movePrimary : "" + coll.getDB(), to : shards[0]._id }) )
printjson( admin.runCommand({ shardCollection : "" + coll, key : { _id : 1 } }) )
printjson( admin.runCommand({ split : "" + coll, middle : { _id : 0 } }) )
printjson( admin.runCommand({ moveChunk : "" + coll, find : { _id : 0 }, to : shards[1]._id }) )
st.printShardingStatus()
jsTest.log( "Testing GLE...")
// insert to two diff shards
coll.insert({ _id : -1, hello : "world" })
coll.insert({ _id : 1, hello : "world" })
waitForWrite(0, {_id: -1}, 1);
waitForWrite(1, {_id: 1}, 1);
jsTest.log( "GLE : " + tojson( coll.getDB().getLastErrorObj() ) )
jsTest.log( "Testing GLE when writeback host goes down..." )
// insert to two diff shards
coll.insert({ _id : -2, hello : "world" })
coll.insert({ _id : 2, hello : "world" })
waitForWrite(0, {_id: -2}, 1);
waitForWrite(1, {_id: 2}, 1);
MongoRunner.stopMongod( st.shard0 )
jsTest.log( "GLE : " + tojson( coll.getDB().getLastErrorObj() ) )
st.shard0 = MongoRunner.runMongod( st.shard0 )
jsTest.log( "Testing GLE when main host goes down..." )
// insert to two diff shards
coll.insert({ _id : -3, hello : "world" })
coll.insert({ _id : 3, hello : "world" })
waitForWrite(0, {_id: -3}, 1);
waitForWrite(1, {_id: 3}, 1);
MongoRunner.stopMongod( st.shard1 )
try{
jsTest.log( "Calling GLE! " )
coll.getDB().getLastErrorObj()
assert( false )
}
catch( e ){
jsTest.log( "GLE : " + e )
// Stupid string exceptions
assert( /could not get last error/.test( e + "") )
}
st.shard1 = MongoRunner.runMongod( st.shard1 )
jsTest.log( "Testing multi GLE for multi-host writes..." )
coll.update({ hello : "world" }, { $set : { goodbye : "world" } }, false, true)
waitForWrite(0, {goodbye: "world"}, 3);
waitForWrite(1, {goodbye: "world"}, 3);
jsTest.log( "GLE : " + tojson( coll.getDB().getLastErrorObj() ) )
jsTest.log( "Testing multi GLE when host goes down..." )
// insert to two diff shards
coll.update({ hello : "world" }, { $set : { goodnight : "moon" } }, false, true)
waitForWrite(0, {goodnight: "moon"}, 3);
waitForWrite(1, {goodnight: "moon"}, 3);
MongoRunner.stopMongod( st.shard0 )
try{
jsTest.log( "Calling GLE! " )
coll.getDB().getLastErrorObj()
assert( false )
}
catch( e ){
jsTest.log( "GLE : " + e )
// Stupid string exceptions
assert( /could not get last error/.test( e + "") )
}
st.shard0 = MongoRunner.runMongod( st.shard0 )
jsTest.log( "Testing stale version GLE when host goes down..." )
var staleColl = st.s1.getCollection( coll + "" )
staleColl.findOne()
printjson( admin.runCommand({ moveChunk : "" + coll, find : { _id : 0 }, to : shards[2]._id }) )
waitForWrite(2, {goodnight: "moon"}, 3);
MongoRunner.stopMongod( st.shard2 )
jsTest.log( "Sending stale write..." )
staleColl.insert({ _id : 4, hello : "world" })
assert.neq( null, staleColl.getDB().getLastError() )
jsTest.log( "Done!" )
st.stop()
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