presto-hive/src/main/java/io/prestosql/plugin/hive/metastore/cache/CachingHiveMetastoreModule.java/CachingHiveMetastoreModule/createCachingHiveMetastoreExecutor
class CachingHiveMetastoreModule:    @Provides
    @Singleton
    @ForCachingHiveMetastore
    public Executor createCachingHiveMetastoreExecutor(HiveCatalogName catalogName, CachingHiveMetastoreConfig hiveConfig)
    {
        return new BoundedExecutor(
                newCachedThreadPool(daemonThreadsNamed("hive-metastore-" + catalogName + "-%s")),
                hiveConfig.getMaxMetastoreRefreshThreads());
    }