CHANGELOG: add release notes for v1.0.2 (#342)

CHANGELOG.md

@@ -2,6 +2,47 @@
 
 All notable changes to this project will be documented in this file.
 
+## [1.0.2] 2019-10-30
+
+### Improvements
+
+- Generate some config items for DM-worker automatically
+- Generate some config items for replication task automatically
+- Simplify the output of `query-status` without arguments
+- Manage DB connections directly for downstream
+
+### Bug fixes
+
+- Fix some panic when starting up or executing SQL statements
+- Fix abnormal sharding DDL replication on DDL execution timeout
+- Fix starting task failure caused by the checking timeout or any inaccessible DM-worker
+- Fix SQL execution retry for some error
+
+### Action required
+
+- When upgrading from a previous version, note that you must upgrade all DM components (dmctl/DM-master/DM-worker) together
+
+### Detailed Bug Fixes and Changes
+
+- Generate random `server-id` for DM-worker config automatically [#337](https://github.com/pingcap/dm/pull/337)
+- Generate `flavor` for DM-worker config automatically [#328](https://github.com/pingcap/dm/pull/328)
+- Generate `relay-binlog-name` and `relay-binlog-gtid` for DM-worker config automatically [#318](https://github.com/pingcap/dm/pull/318)
+- Generate table name list for dumping in task config from black & white table lists automatically [#326](https://github.com/pingcap/dm/pull/326)
+- Add concurrency items (`mydumper-thread`, `loader-thread` and `syncer-thread`) for task config [#314](https://github.com/pingcap/dm/pull/314)
+- Simplify the output of `query-status` without arguments [#340](https://github.com/pingcap/dm/pull/340)
+- Fix abnormal sharding DDL replication on DDL execution timeout [#338](https://github.com/pingcap/dm/pull/338)
+- Fix potential DM-worker panic when restoring subtask from local meta [#311](https://github.com/pingcap/dm/pull/311)
+- Fix DM-worker panic when committing a DML transaction failed [#313](https://github.com/pingcap/dm/pull/313)
+- Fix DM-worker or DM-master panic when the listening port is being used [#301](https://github.com/pingcap/dm/pull/301)
+- Fix retry for error code 1105 [#321](https://github.com/pingcap/dm/pull/321), [#332](https://github.com/pingcap/dm/pull/332)
+- Fix retry for `Duplicate entry` and `Data too long for column` [#313](https://github.com/pingcap/dm/pull/313)
+- Fix task check timeout when having large amounts of tables in upstream [#327](https://github.com/pingcap/dm/pull/327)
+- Fix starting task failure when any DM-worker is not accessible [#319](https://github.com/pingcap/dm/pull/319)
+- Fix potential DM-worker startup failure in GTID mode after being recovered from corrupt relay log [#339](https://github.com/pingcap/dm/pull/339)
+- Fix in-memory TPS count for sync unit [#294](https://github.com/pingcap/dm/pull/294)
+- Manage DB connections directly for downstream [#325](https://github.com/pingcap/dm/pull/325)
+- Improve error system by refining error information passed between components [#320](https://github.com/pingcap/dm/pull/320)
+
 ## [1.0.1] 2019-09-10
 
 #### Bug fixes