[CASSANDRA-7810] tombstones gc'd before being locally applied

• Type: Bug
• Status: Resolved
• Priority: Normal
• Resolution: Fixed
• Fix Version/s: 1.2.19, 2.0.11, 2.1.0
• Component/s: Local/Compaction

Environment

2.1.0.rc6

• Severity: Normal
• Assignee: Marcus Eriksson
• Reporter: Jonathan Halliday

Authors

Marcus Eriksson

Reviewers

Sylvain Lebresne

• Created: 21/Aug/14 14:16
• Updated: 16/Apr/19 09:31
• Resolved: 27/Aug/14 11:13

Description

1. single node environment
   CREATE KEYSPACE test WITH replication = {'class': 'SimpleStrategy', 'replication_factor': 1 }

   ;
   use test;
   create table foo (a int, b int, primary key(a,b));
   alter table foo with gc_grace_seconds = 0;
   insert into foo (a,b) values (1,2);
   select * from foo;

   • one row returned. so far, so good.
     delete from foo where a=1 and b=2;
     select * from foo;
   • 0 rows. still rainbows and kittens.
     bin/nodetool flush;
     bin/nodetool compact;
     select * from foo;
     a | b
     --+--
     1 | 2

(1 rows)

gahhh.

looks like the tombstones were considered obsolete and thrown away before being applied to the compaction? gc_grace just means the interval after which they won't be available to remote nodes repair - they should still apply locally regardless (and do correctly in 2.0.9)

Issue Links

• breaks: CASSANDRA-9486 LazilyCompactedRow accumulates all expired RangeTombstones