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Code Issues Releases Activity

SERVER-17586 Update ShardVersionMap in ChunkManager when shard is deleted during balancing

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This commit is contained in:
Daniel Alabi 2015-03-17 13:28:52 -04:00
parent 63cdeb9c56
commit 465ca1774d
2 changed files with 18 additions and 10 deletions
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26
src/mongo/s/chunk_manager.cpp
View File

@ -158,7 +158,7 @@ namespace {
ShardVersionMap shardVersions;
Timer t;
bool success = _load(config, chunkMap, shards, shardVersions, oldManager);
bool success = _load(config, chunkMap, shards, &shardVersions, oldManager);
if( success ){
{
@ -201,7 +201,7 @@ namespace {
bool ChunkManager::_load(const string& config,
ChunkMap& chunkMap,
set<Shard>& shards,
ShardVersionMap& shardVersions,
ShardVersionMap* shardVersions,
const ChunkManager* oldManager)
{
@ -215,7 +215,7 @@ namespace {
// Get the old max version
_version = oldManager->getVersion();
// Load a copy of the old versions
shardVersions = oldManager->_shardVersions;
*shardVersions = oldManager->_shardVersions;
// Load a copy of the chunk map, replacing the chunk manager with our own
const ChunkMap& oldChunkMap = oldManager->getChunkMap();
@ -243,7 +243,7 @@ namespace {
// Attach a diff tracker for the versioned chunk data
CMConfigDiffTracker differ( this );
differ.attach( _ns, chunkMap, _version, shardVersions );
differ.attach( _ns, chunkMap, _version, *shardVersions );
// Diff tracker should *always* find at least one chunk if collection exists
int diffsApplied = differ.calculateConfigDiff(config);
@ -252,9 +252,17 @@ namespace {
LOG(2) << "loaded " << diffsApplied << " chunks into new chunk manager for " << _ns
<< " with version " << _version;
// Add all the shards we find to the shards set
for( ShardVersionMap::iterator it = shardVersions.begin(); it != shardVersions.end(); it++ ){
shards.insert( it->first );
// Add all existing shards we find to the shards set
for (ShardVersionMap::iterator it = shardVersions->begin();
it != shardVersions->end();
) {
if (Shard::findIfExists(it->first).ok()) {
shards.insert(it->first);
++it;
}
else {
shardVersions->erase(it++);
}
}
return true;
@ -267,7 +275,7 @@ namespace {
// Set all our data to empty
chunkMap.clear();
shardVersions.clear();
shardVersions->clear();
_version = ChunkVersion( 0, 0, OID() );
return true;
@ -291,7 +299,7 @@ namespace {
// Set all our data to empty to be extra safe
chunkMap.clear();
shardVersions.clear();
shardVersions->clear();
_version = ChunkVersion( 0, 0, OID() );
return allInconsistent;

2
src/mongo/s/chunk_manager.h
View File

@ -224,7 +224,7 @@ namespace mongo {
bool _load(const std::string& config,
ChunkMap& chunks,
std::set<Shard>& shards,
ShardVersionMap& shardVersions,
ShardVersionMap* shardVersions,
const ChunkManager* oldManager);
static bool _isValid(const ChunkMap& chunks);