curl host:9200/_flush) before shutting down the cluster, with no indexing operations happening after the flush.
cachethread pool to handle cache loading of async caches (bloom filter) (#1777)
getthread pool that handles get request (#1778)
_[interfaceName]_might fail to resolve the host address (#1754)
node.datais set to
false, the upgrade shards process from 0.18 fails (#1793)