While going through the MapR DB material, I found a new word "Tablet". Cam anyone explain this?
A tablet is a logical construct - a group of rows in the table that are stored and replicated together. Tables are automatically broken up into tablets as a table grows. If you are familiar with HBase at all, a MapR tablet is equivalent to an HBase region.
I haven't yet started studying HBase. I am studying MapR DB directly. After this I will study HBase. So a group of rows in a table are tablets. Can you please help me on what basis these group of rows formulated?
Hi Sai Attaluri,
MapR-DB is based on HBase. MapR-DB has some advantages and additional features (it integrates with MapR-FS, for example), and uses some different terminology ("tablets" instead of "regions" for example). However, to really understand MapR-DB at the level of depth you are looking for, I recommend taking the HBase series of courses, starting with DEV 320 - Apache HBase Data Model and Architecture.
I will go through all the courses. Though I am a slow reader, I go into the details:-) I dont know whether its my strength or weakness:-)
Tables are split into tablets automatically as a table grows (much like a file is automatically split into chunks for storage). The default size of a tablet is 4GB. It is possible to change the tablet size...or even to manually split a table into tablets, but it is not recommended.
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