Brandon Williams created CASSANDRA-4373:
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Summary: Gossip can surreptitiously mark a node UP twice without
marking it DOWN
Key: CASSANDRA-4373
URL: https://issues.apache.org/jira/browse/CASSANDRA-4373
Project: Cassandra
Issue Type: Bug
Reporter: Brandon Williams
Assignee: Brandon Williams
Fix For: 1.1.2
As evidenced by dtests:
{noformat}
INFO [GossipStage:1] 2012-06-25 17:19:21,999 Gossiper.java (line 770) Node
/127.0.0.2 has restarted, now UP
INFO [GossipStage:1] 2012-06-25 17:19:22,000 Gossiper.java (line 738)
InetAddress /127.0.0.2 is now UP
INFO [GossipStage:1] 2012-06-25 17:19:22,001 StorageService.java (line 1103)
Node /127.0.0.2 state jump to normal
INFO [GossipStage:1] 2012-06-25 17:19:22,002 Gossiper.java (line 770) Node
/127.0.0.3 has restarted, now UP
INFO [GossipStage:1] 2012-06-25 17:19:22,004 Gossiper.java (line 738)
InetAddress /127.0.0.3 is now UP
INFO [GossipStage:1] 2012-06-25 17:19:22,005 StorageService.java (line 1103)
Node /127.0.0.3 state jump to normal
INFO [RMI TCP Connection(2)-50.57.224.92] 2012-06-25 17:19:24,809
StorageService.java (line 1933) Starting repair command #1, repairing 3 ranges.
INFO [AntiEntropySessions:1] 2012-06-25 17:19:24,818 AntiEntropyService.java
(line 620) [repair #d21b8bd0-bf13-11e1-0000-fe8ebeead9ff] new session: will
sync /127.0.0.1, /127.0.0.2, /127.0.0.3 on range
(Token(bytes[00]),Token(bytes[0113427455640312821154458202477256070484])] for
ks.[cf]
INFO [AntiEntropySessions:1] 2012-06-25 17:19:24,823 AntiEntropyService.java
(line 825) [repair #d21b8bd0-bf13-11e1-0000-fe8ebeead9ff] requesting merkle
trees for cf (to [/127.0.0.2, /127.0.0.3, /127.0.0.1])
INFO [GossipStage:1] 2012-06-25 17:19:24,925 Gossiper.java (line 770) Node
/127.0.0.3 has restarted, now UP
INFO [GossipStage:1] 2012-06-25 17:19:24,926 Gossiper.java (line 738)
InetAddress /127.0.0.3 is now UP
INFO [GossipStage:1] 2012-06-25 17:19:24,926 StorageService.java (line 1103)
Node /127.0.0.3 state jump to normal
ERROR [AntiEntropySessions:1] 2012-06-25 17:19:24,927 AntiEntropyService.java
(line 670) [repair #d21b8bd0-bf13-11e1-0000-fe8ebeead9ff] session completed
with the following error
java.io.IOException: Endpoint /127.0.0.3 died
{noformat}
It appears that given nodes X, Y, and Z, X sees Z as up via Y even though Z is
still down, but the FD does not ever mark it down. Later when Z actually does
come up, this triggers another handleMajorStateChange as a restart, which
causes an onRestart event, which in turn fails the repair even though it
succeeds.
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