# TODOs > Legecies of [1.5 version](https://github.com/apache/incubator-hugegraph/issues/2575) - [x] PD/Store related doc transfer (to Wiki/Website) https://github.com/apache/incubator-hugegraph-doc/issues/398 - https://github.com/apache/incubator-hugegraph-doc/pull/402 - [x] remove useless files - [x] verify-license.json - [x] hugegraph-pd/hg-pd-dist/src/assembly/static/conf/verify-license.json - https://github.com/apache/incubator-hugegraph/pull/2681 - [ ] ci - [ ] merge Hstore CI with server ci - https://github.com/apache/incubator-hugegraph/pull/2789 - [x] remove the compatible code for Java8 / legacy code https://github.com/apache/incubator-hugegraph/issues/2499 - [x] AuthServer/HugeSecurityManager (remove the [Reflection](https://github.com/apache/incubator-hugegraph/blob/master/hugegraph-server/hugegraph-core/src/main/java/org/apache/hugegraph/util/Reflection.java) code) - https://github.com/apache/incubator-hugegraph/pull/2792 - [ ] Disable legacy master-worker mechanism in multi-server @shirleyStorage - [ ] pd-store docker: - [ ] url redirection - [ ] README > New tasks in 1.7 version - [x] Remove unnecessary backend code - https://github.com/apache/incubator-hugegraph/pull/2746 - [x] update [toolchain](https://github.com/apache/incubator-hugegraph-toolchain) to new version - [x] https://github.com/apache/incubator-hugegraph-toolchain/pull/633 - [ ] https://github.com/apache/incubator-hugegraph-toolchain/pull/632 - [x] support graphspace in server - [x] JRAFT Leader Preemption and Hessian Deserialization Vulnerabilities - [x] further migration from internal 3.7/4.0 > Main PR: https://github.com/apache/incubator-hugegraph/pull/2889
TODOs
Remove unnecessary backend code
MySQL/PG/c*(.etc) #2746update toolchain to new version
support graphspace in server
JRAFT Leader Preemption and Hessian Deserialization Vulnerabilities
further migration from internal 3.7/4.0