Hi, all The related PR is #440. Multiple storage groups deletion will be suppoted, like "SET STORAGE GROUP TO root.ln.wf01.wt01, root.ln.wf01.wt02, root.ln.wf01.wt03".
I implemented it by defining the grammer in ANTLR. I added and implemented "analyzeMetaDataDeleteFileLevel" method in LogicalGenerator.java, to generate the logical plan of storage group deletion. In StorageEngine, "deleteStorageGroup" is also modified. I added "if" statement to check whether the prosessor is null. If the storage group is not in processorMap, it can be null. It happens when a user set a storage group but doesn't insert any data in it. Then if the user tries to delete the storage group, the previous code will throw null pointer exception, which should be aviod. Best, _____________________ Yuyuan KANG > -----原始邮件----- > 发件人: "康愈圆" <[email protected]> > 发送时间: 2019-10-11 19:07:39 (星期五) > 收件人: [email protected] > 抄送: > 主题: Implement Delete Storage Group SQL interface [IOTDB-188] > > Hi, all > > > I'm now working on issue #188. I will implement delete storage group sql > interface. > > > > > Best, > ___________________ > Yuyuan KANG
