7e6dd638c5
Depending on the speeds of operations in the shards, it is possible that the "to" shard has not finished a migration when we try the next one. Use assert.soon() to wait a little and retry when this happens.
64 lines
1.6 KiB
JavaScript
64 lines
1.6 KiB
JavaScript
// Tests that an empty shard can't be the cause of a chunk reset
|
|
|
|
var st = new ShardingTest({ shards : 2, mongos : 2 })
|
|
|
|
// Don't balance since we're manually moving chunks
|
|
st.stopBalancer()
|
|
|
|
var coll = st.s.getCollection( jsTestName() + ".coll" )
|
|
|
|
for( var i = -10; i < 10; i++ )
|
|
coll.insert({ _id : i })
|
|
|
|
st.shardColl( coll, { _id : 1 }, { _id : 0 } )
|
|
|
|
jsTestLog( "Sharded setup complete" )
|
|
|
|
st.printShardingStatus()
|
|
|
|
jsTestLog( "Setting initial versions for each mongos..." )
|
|
|
|
coll.find().itcount()
|
|
|
|
var collB = st.s1.getCollection( "" + coll )
|
|
collB.find().itcount()
|
|
|
|
jsTestLog( "Migrating via first mongos..." )
|
|
|
|
var fullShard = st.getShard( coll, { _id : 1 } )
|
|
var emptyShard = st.getShard( coll, { _id : -1 } )
|
|
|
|
var admin = st.s.getDB( "admin" )
|
|
assert.soon(
|
|
function () {
|
|
var result = admin.runCommand( { moveChunk: "" + coll,
|
|
find: { _id: -1 },
|
|
to: fullShard.shardName,
|
|
_waitForDelete: true } );
|
|
jsTestLog('moveChunk result = ' + tojson(result));
|
|
return result.ok;
|
|
},
|
|
"Setup FAILURE: Unable to move chunk from " + emptyShard.shardName +
|
|
" to " + fullShard.shardName
|
|
);
|
|
|
|
jsTestLog( "Resetting shard version via first mongos..." )
|
|
|
|
coll.find().itcount()
|
|
|
|
jsTestLog( "Making sure we don't insert into the wrong shard..." )
|
|
|
|
collB.insert({ _id : -11 })
|
|
|
|
var emptyColl = emptyShard.getCollection( "" + coll )
|
|
|
|
print( emptyColl )
|
|
print( emptyShard )
|
|
print( emptyShard.shardName )
|
|
st.printShardingStatus()
|
|
|
|
assert.eq( 0, emptyColl.find().itcount() )
|
|
|
|
jsTestLog("DONE!");
|
|
st.stop();
|