Hi, > 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".
As far as I know, we do not support setting multiple storage groups in one sql, but it would be great if we support. > I added and implemented "analyzeMetaDataDeleteFileLevel" method in > LogicalGenerator.java, to generate the logical plan of storage group deletion. 'FileLevel' is the ancient version of 'StorageGroup', try to use 'StorageGroup' in all places. Thanks, -- Jialin Qiao School of Software, Tsinghua University 乔嘉林 清华大学 软件学院 > -----原始邮件----- > 发件人: "康愈圆" <ky...@mails.tsinghua.edu.cn> > 发送时间: 2019-10-12 10:37:36 (星期六) > 收件人: dev@iotdb.apache.org > 抄送: > 主题: Re: Implement Delete Storage Group SQL interface [IOTDB-188] > > 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" <ky...@mails.tsinghua.edu.cn> > > 发送时间: 2019-10-11 19:07:39 (星期五) > > 收件人: dev@iotdb.apache.org > > 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
