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/**
* Refine shard key currently only changes the epoch and does not change the major/minor versions
* in the chunks. This test simulates a stepDown in the middle of making changes to the
* config.cache collections by the ShardServerCatalogCacheLoader after a refine shard key and makes
* sure that the shard will be able to eventually reach the valid state on config.cache.
*
* @tags: [requires_fcv_47, disabled_due_to_server_58295]
*/
load("jstests/libs/uuid_util.js");
(function() {
'use strict';
let st = new ShardingTest({shards: 1});
let testDB = st.s.getDB('test');
assert.commandWorked(st.s.adminCommand({enableSharding: 'test'}));
st.ensurePrimaryShard('test', st.shard0.shardName);
assert.commandWorked(st.s.adminCommand({shardCollection: 'test.user', key: {x: 1}}));
assert.commandWorked(st.s.adminCommand({split: 'test.user', middle: {x: 0}}));
assert.commandWorked(st.s.adminCommand({split: 'test.user', middle: {x: 10}}));
assert.commandWorked(testDB.user.insert({x: 1, y: 1}));
assert.commandWorked(testDB.user.insert({x: 10, y: 1}));
testDB.user.createIndex({x: 1, y: 1});
let priConn = st.rs0.getPrimary();
assert.commandWorked(
priConn.adminCommand({_flushRoutingTableCacheUpdates: 'test.user', syncFromConfig: true}));
let collEntry = st.config.collections.findOne({_id: 'test.user'});
let chunksCollName = "cache.chunks.test.user";
let chunkCache = priConn.getDB('config').getCollection(chunksCollName);
let preRefineChunks = chunkCache.find().toArray();
assert.eq(3, preRefineChunks.length);
assert.commandWorked(st.s.adminCommand({refineCollectionShardKey: 'test.user', key: {x: 1, y: 1}}));
// Force refresh the config.cache.collections and config.cache.chunks, then manually revert
// the config.cache.chunks to simulate crash before updating config.cache.chunks.
assert.commandWorked(priConn.adminCommand({_flushRoutingTableCacheUpdates: 'test.user'}));
assert.commandWorked(chunkCache.remove({}, false /* justOne */));
preRefineChunks.forEach((chunk) => {
assert.commandWorked(chunkCache.insert(chunk));
});
let collCache = priConn.getDB('config').cache.collections;
assert.commandWorked(collCache.update({_id: 'test.user'}, {$set: {refreshing: true}}));
// Force refresh should be able to detect anomaly and fix the cache collections.
assert.commandWorked(priConn.adminCommand({_flushRoutingTableCacheUpdates: 'test.user'}));
let fixedChunks = chunkCache.find().sort({min: 1}).toArray();
assert.eq(3, fixedChunks.length);
assert.eq({x: MinKey, y: MinKey}, fixedChunks[0]._id);
assert.eq({x: 0, y: MinKey}, fixedChunks[1]._id);
assert.eq({x: 10, y: MinKey}, fixedChunks[2]._id);
let collDoc = collCache.findOne({_id: 'test.user'});
assert.eq(false, collDoc.refreshing);
st.stop();
}());
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