codope commented on code in PR #10087:
URL: https://github.com/apache/hudi/pull/10087#discussion_r1393526570


##########
website/docs/timeline.md:
##########
@@ -54,6 +54,35 @@ after certain thresholds the archival kicks in to move older 
timeline events to
 timeline is never contacted for regular operations of the table and is merely 
used for book-keeping and debugging purposes.
 Any instants seen under “.hoodie” directory refers to active timeline and 
those archived goes into “.hoodie/archived” folder.
 
+#### LSM Timeline
+
+As mentioned above, active timeline has limited log history to be fast, while 
archived timeline is expensive to access

Review Comment:
   For the beta release it is enabled by default. Users will be automatically 
transitioned to the new timeline and can't go back unless they downgrade the 
hudi version. I can mention about a config which controls the timeline 
compaction - `hoodie.timeline.compaction.batch.size`.



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