BATCH OPERATION issue

2017-09-13 Thread Deepak Panda
Hi All, Am in the process of learning batch operations. Here is what I tried. Executed a CQL query against the student table(student_id is the primary key). select student_id,position,WRITETIME(class_id),WRITETIME(position) FROM student WHERE student_id='s123'; student_id position writetime(cl

Re: New Column addition and Locking

2017-09-08 Thread Deepak Panda
your table and you're on a 3.something version that isn't > one of those, upgrade first. > > -- > Jeff Jirsa > > >> On Sep 8, 2017, at 7:13 AM, Deepak Panda wrote: >> >> Hi, >> >> For Cassandra 3.11, when we add a new column is added to an e

New Column addition and Locking

2017-09-08 Thread Deepak Panda
Hi, For Cassandra 3.11, when we add a new column is added to an existing table having huge number of rows and huge data manipulation going on will there be any issues? Will the operations blocked till the column is added? Is the table locked during column addition? If yes, what type of lock? --