我无法启动 mongod 的损坏收集原因，mongod.log 说：
2018-01-06T09:32:19.089+0000 I INDEX [initandlisten] found 2
index(es) that wasn't finished before shutdown
2018-01-06T09:32:19.089+0000 I - [initandlisten] Fatal assertion
28579 UnsupportedFormat: Unable to find metadata for table:index-5155-
3080678491732636775 Index: {name: _id_, ns: gozazu.phones_10759} -
version too new for this mongod. See
http://dochub.mongodb.org/core/3.4-index-downgrade for detailed
instructions on how to handle this error. at
src/mongo/db/storage/wiredtiger/wiredtiger_index.cpp 241
2018-01-06T09:32:19.089+0000 I - [initandlisten]
***aborting after fassert() failure
命令 mongod --repair 没有帮助。如果 mongo shell 无法连接到 mongod，我该如何删除或修复这个集合？