[ https://issues.apache.org/jira/browse/CASSANDRA-14543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jay Zhuang updated CASSANDRA-14543: ----------------------------------- Resolution: Won't Fix Status: Resolved (was: Awaiting Feedback) > Hinted handoff to replay purgeable tombstones > ---------------------------------------------- > > Key: CASSANDRA-14543 > URL: https://issues.apache.org/jira/browse/CASSANDRA-14543 > Project: Cassandra > Issue Type: Improvement > Reporter: Jay Zhuang > Priority: Minor > > Hinted-handoff currently only dispatches and applies the mutations that are > within GCGS: > [{{Hint.java:97}}|https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/hints/Hint.java#L97]. > Which is to make sure it won't resurrect any deleted data. > But replaying tombstones should be safe, it could reduce the chance to have > [un-repairable inconsistent > data|https://lists.apache.org/thread.html/2d3d39d960143d4d2146ed2530821504ff855e832713dec7d0afd8ac@%3Cdev.cassandra.apache.org%3E]. > Here is the user scenario it tries to fix: > {noformat} > 1. Create a 3 nodes cluster > 2. Create a table with small gc_grace_seconds (for reproducing purpose): > CREATE KEYSPACE foo WITH replication = {'class': 'SimpleStrategy', > 'replication_factor': 3}; > CREATE TABLE foo.bar ( > id int PRIMARY KEY, > name text > ) WITH gc_grace_seconds=30; > 3. Insert data with consistency all: > INSERT INTO foo.bar (id, name) VALUES(1, 'cstar'); > 4. stop 1 node > $ ccm node2 stop > 5. Delete the data with consistency quorum: > DELETE FROM foo.bar WHERE id=1; > 6. Wait 30 seconds and then start node2: > $ ccm node2 start > {noformat} > Now, node2 has the data, node1/node3 have the purgeable tombstone. It > triggers RR every time which sends data from node2 to node1/node3 but repairs > nothing. > With purgeable tombstones hints handoff, it at least will dispatch the > tombstone and delete the data on node2. It won't fix the root cause but > reduce the chance to have this issue. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@cassandra.apache.org For additional commands, e-mail: commits-h...@cassandra.apache.org