Assertion `global_status_var.global_memory_used == 0 ' failed upon server restart with partitioned RocksDB table

--source include/have_partition.inc

INSTALL SONAME 'ha_rocksdb';

CREATE TABLE t1 (a INT) ENGINE=RocksDB PARTITION BY HASH(a) PARTITIONS 2;

INSERT INTO t1 (a) VALUES (1),(2);

ALTER TABLE t1 ADD PARTITION PARTITIONS 2;

--source include/restart_mysqld.inc

SELECT 1;

mysqld: /data/src/10.2/sql/mysqld.cc:2160: void mysqld_exit(int): Assertion `global_status_var.global_memory_used == 0' failed.

170622 19:22:06 [ERROR] mysqld got signal 6 ;

#3  <signal handler called>

#4  0x00007fca74f0ffcf in raise () from /lib/x86_64-linux-gnu/libc.so.6

#5  0x00007fca74f113fa in abort () from /lib/x86_64-linux-gnu/libc.so.6

#6  0x00007fca74f08e37 in __assert_fail_base () from /lib/x86_64-linux-gnu/libc.so.6

#7  0x00007fca74f08ee2 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6

#8  0x000055fa47a9713c in mysqld_exit (exit_code=0) at /data/src/10.2/sql/mysqld.cc:2160

#9  0x000055fa47a9efa5 in mysqld_main (argc=129, argv=0x55fa49ea9f50) at /data/src/10.2/sql/mysqld.cc:6079

#10 0x000055fa47a937b0 in main (argc=7, argv=0x7fff875cab38) at /data/src/10.2/sql/main.cc:25