Bug#17283409 4-WAY DEADLOCK: ZOMBIES, PURGING BINLOGS, SHOW PROCESSLIST, SHOW BINLOGS connect connection1,localhost,root,,test,$MASTER_MYPORT,; connection default; SET DEBUG_SYNC='before_one_element_read_from_threads_iterator SIGNAL parked1 WAIT_FOR go'; SHOW PROCESSLIST; connection connection1; "Wait_for parked1" SET DEBUG_SYNC='now WAIT_FOR parked1'; connect connection2,localhost,root,,test,$MASTER_MYPORT,; connect connection3,localhost,root,,test,$MASTER_MYPORT,; SET DEBUG_SYNC='now SIGNAL go'; connection default; Id User Host db Command Time State Info root test