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//
// Tests that only a correct major-version is needed to connect to a shard via mongos
//
(function() {
'use strict';
// Test with default value of incrementChunkMajorVersionOnChunkSplits, which is false
(() => {
var st = new ShardingTest({shards: 1, mongos: 2});
var mongos = st.s0;
var staleMongos = st.s1;
var admin = mongos.getDB("admin");
var config = mongos.getDB("config");
var coll = mongos.getCollection("foo.bar");
// Shard collection
assert.commandWorked(admin.runCommand({enableSharding: coll.getDB() + ""}));
assert.commandWorked(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}));
// Make sure our stale mongos is up-to-date with no splits
staleMongos.getCollection(coll + "").findOne();
// Run one split
assert.commandWorked(admin.runCommand({split: coll + "", middle: {_id: 0}}));
// Make sure our stale mongos is not up-to-date with the split
printjson(admin.runCommand({getShardVersion: coll + ""}));
printjson(staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}));
// Compare strings b/c timestamp comparison is a bit weird
assert.eq(Timestamp(1, 2), admin.runCommand({getShardVersion: coll + ""}).version);
assert.eq(Timestamp(1, 0),
staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}).version);
// See if our stale mongos is required to catch up to run a findOne on an existing connection
staleMongos.getCollection(coll + "").findOne();
printjson(staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}));
assert.eq(Timestamp(1, 0),
staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}).version);
// See if our stale mongos is required to catch up to run a findOne on a new connection
staleMongos = new Mongo(staleMongos.host);
staleMongos.getCollection(coll + "").findOne();
printjson(staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}));
assert.eq(Timestamp(1, 0),
staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}).version);
// Merge the just-split chunks and ensure the major version didn't go up
assert.commandWorked(
admin.runCommand({mergeChunks: coll + "", bounds: [{_id: MinKey}, {_id: MaxKey}]}));
assert.eq(Timestamp(1, 3), admin.runCommand({getShardVersion: coll + ""}).version);
st.stop();
})();
// Test with incrementChunkMajorVersionOnChunkSplits = true and FCV last
// stable.
(() => {
load("jstests/libs/feature_compatibility_version.js");
var st = new ShardingTest({
shards: 1,
mongos: 2,
other: {configOptions: {setParameter: {incrementChunkMajorVersionOnChunkSplits: true}}}
});
assert.commandWorked(
st.configRS.getPrimary().adminCommand({setFeatureCompatibilityVersion: lastStableFCV}));
var mongos = st.s0;
var staleMongos = st.s1;
var admin = mongos.getDB("admin");
var config = mongos.getDB("config");
var coll = mongos.getCollection("foo.bar");
// Shard collection
assert.commandWorked(admin.runCommand({enableSharding: coll.getDB() + ""}));
assert.commandWorked(admin.runCommand({shardCollection: coll + "", key: {_id: 1}}));
// Make sure our stale mongos is up-to-date with no splits
staleMongos.getCollection(coll + "").findOne();
// Run one split
assert.commandWorked(admin.runCommand({split: coll + "", middle: {_id: 0}}));
// Make sure our stale mongos is not up-to-date with the split
printjson(admin.runCommand({getShardVersion: coll + ""}));
printjson(staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}));
// Compare strings b/c timestamp comparison is a bit weird
assert.eq(Timestamp(2, 2), admin.runCommand({getShardVersion: coll + ""}).version);
assert.eq(Timestamp(1, 0),
staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}).version);
// See if our stale mongos is required to catch up to run a findOne on an existing connection
staleMongos.getCollection(coll + "").findOne();
printjson(staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}));
// Run another split on the original chunk, which does not exist anymore (but the stale mongos
// thinks it exists). This should fail and cause a refresh on the shard, updating its shard
// version.
assert.commandFailed(staleMongos.getDB("admin").runCommand(
{split: coll + "", bounds: [{_id: MinKey}, {_id: MaxKey}]}));
// This findOne will cause a refresh on the router since the shard version has now been
// increased.
staleMongos.getCollection(coll + "").findOne();
printjson(staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}));
// The previously stale mongos should now be up-to-date.
assert.eq(Timestamp(2, 2),
staleMongos.getDB("admin").runCommand({getShardVersion: coll + ""}).version);
// Merge the just-split chunks and ensure the major version went up
assert.commandWorked(
admin.runCommand({mergeChunks: coll + "", bounds: [{_id: MinKey}, {_id: MaxKey}]}));
assert.eq(Timestamp(3, 0), admin.runCommand({getShardVersion: coll + ""}).version);
st.stop();
})();
})();
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