Hi Liang, Now the TABLE_BLOCKSIZE is only limited to the size of carbondata file. It is not considered for allocating tasks. So it does not matter the size of TABLE_BLOCKSIZE. But yes we can consider it as 512M.
We can also change the default of blocklet (carbon.blockletgroup.size.in.mb) size to 128MB. Currently, it is only 64MB. Since the number of tasks allocation is derived from blocklet it is better to increase the blocklet size. And also we should add a table level property for blocklet size to configure while creating a table. Regards, Ravindra. On 11 October 2017 at 13:36, Liang Chen <chenliang6...@gmail.com> wrote: > Hi All > > As you know, some default value of parameters need to adjust for most of > cases, this discussion is for collecting which parameters' default value > need to be optimized: > > 1. TABLE_BLOCKSIZE: > current default is 1G, propose to adjust to 512M > > 2. > Please append at here if you propose to adjust which parameters' default > value . > > Regards > Liang > > > > -- > Sent from: http://apache-carbondata-dev-mailing-list-archive.1130556. > n5.nabble.com/ > -- Thanks & Regards, Ravi
