MDL_REQUEST_INIT(&mdl_request, MDL_key::GLOBAL,"","", MDL_SHARED,// ===> 注意此处是 MDL_key::GLOBAL,且是共享锁MDL_EXPLICIT);/* Increment static variable first to signal innodb memcached server to release mdl locks held by it */Global_read_lock::m_atomic_active_requests++;if(thd->...
2015-08-27 10:23:29,494 WARN org.apache.hadoop.hdfs.qjournal.client.QuorumJournalManager: Waited 14010 ms (timeout=20000 ms) for a response for startLogSegment(29706138). Succeeded so far: [10.171.82.67:8485]. Exceptions so far: [10.171.81.96:8485: Call From yhbd01/10.171.82.67 to yhb...