1. Java dump内存 jmap -dump:format=b,file=/data/91317.dump 91317 2. OQL Syntax 2.1 查询字符串长度大于指定字符 select * FROM org.t3.hbase.controller.DebugController s where s.name.value.@length > 4 3. dubbo编译跳过java doc mvn clean install -DskipTests -Dmaven.javadoc.skip=true