Release Notes FIX BUGS: [TD-2604]: fix coredump [TD-2583]:function min gets result value zero when column values contain NULL [TD-2429]: data may be lost during load balancing [TD-2557]:insert from file failed after changing stable [TD-2587]: fix bugs introduced by refactor. [TD-2559]: taos can't cancel stable query when fetching data [TD-2302]: fix nodejs exception when query a null value [TD-2563]: fix invalid write caused by top/bottom query at client side. [TD-2562]: fix bug in twa query. [TD-2457]: check the invalid order by clause for top/bottom query. [TD-2560]: client crash when execute 'show tables like' [TD-2550]: fix nodejs connector of td2.0-connector cannot use in 2.0.8.0 or later [TD-2511]: DB new option cacheLastRow ENHANCEMENTS: [TD-2606]: double TSDB_MAX_WAL_SIZE from 1M to 2M [TD-2561]: new field clusterId for SConnectRsp [TD-2378]: optimize the client memory requirement. [TD-2512]: support in memory cached last row query. NEW FEATURES: [TD-2502]: force version checking with rpc request messages DOCS: [TECO-40]: add video link to documentation markdown, change FAQ to list TEST: [TD-2585]: migrate 4 sim cases to python to improve speed [TD-2551]: get insert delay values for taosdemo performance