Hi! Added you as a contributor to Impala (welcome!) and assigned IMPALA-11993. Did a quick check and Impala doesn't delete files during truncate in Iceberg tables. This allows the content before truncation to be reached through time travel. I agree that we should specifically mention that truncate and insert overwrite do not delete the old files. I am not that familiar with Iceberg though, so I would prefer someone with more experience to comment on this too.
>Also, why can't we have a search bar in this documentation, so finding keywords is easy? That's a good idea! Csaba On Sun, Apr 2, 2023 at 4:44 PM superwemanhella <gowthamibhogire...@gmail.com> wrote: > Hello > > I want to work on IMPALA-11993 and need the privilege to self-assign JIRA > stories. My JIRA username is Gia3. > > *Approach -* > As per the documentation here - > https://impala.apache.org/docs/build/asf-site-html/topics/impala_s3.html, > it says that > > - > > The TRUNCATE TABLE > < > https://impala.apache.org/docs/build/asf-site-html/topics/impala_truncate_table.html#truncate_table > > > statement > always removes the corresponding data files from S3 when the table is > truncated. > > > But we would want to update the section 'Writing Iceberg tables' under > > https://impala.apache.org/docs/build/asf-site-html/topics/impala_iceberg.html > with > these details as mentioned in the story - > > *However, for Iceberg it's not the case as Iceberg 'only' creates a new > snapshot for the table but doesn't delete the files, because for time > travel they could be relevant for older snapshots.* > > Please let me know if this understanding is correct. Also, why can't we > have a search bar in this documentation, so finding keywords is easy? > > > https://impala.apache.org/docs/build/asf-site-html/topics/impala_iceberg.html > > < > https://impala.apache.org/docs/build/asf-site-html/topics/impala_iceberg.html > > > > *Thank You* > *Gowthami B* >
