Hi there... In this chapter...
http://hbase.apache.org/book.html#datamodel .. it explains that the "updates" are just a view. There is a merge happening across CFs and versions (and delete-markers).. In this... http://hbase.apache.org/book.html#regions.arch 9.7.5.5. Compaction ... it explains how and when the delete markers are removed in the compaction process. On 9/10/12 2:50 AM, "Monish r" <monishs...@gmail.com> wrote: >Hi, >Thanks for the link . If the meta data information for a delete is part of >key value , then when does this update happen > >When the region is re written by minor compaction. ? >or Is the region re written for a set of batched deletes ? > > > >On Sun, Sep 9, 2012 at 6:42 PM, Doug Meil ><doug.m...@explorysmedical.com>wrote: > >> >> Hi there, >> >> See 9.7.5.4. KeyValue... >> >> http://hbase.apache.org/book.html#regions.arch >> >> Š the tombstone is one of the keytypes. >> >> >> >> On 9/9/12 5:21 AM, "Monish r" <monishs...@gmail.com> wrote: >> >> >Hi, >> >I need some clarifications regarding the Tomb Stone Marker . >> >I was wondering where exactly are the tomb stone markers stored when a >>row >> >is deleted . >> > >> >Are they kept in some memory area and updated in the HFile during >>minor >> >compaction ? >> >If they are updated in the HFile , then what part of a HFile contains >> >this >> >information. >> > >> >Regards, >> >R.Monish >> >> >>
