Hi, I've recently upgraded our Cassandra cluster from 2.1 to 3.9. By default(?) 3.9 creates a debug.log file containing a ton of lines (a new one every second) with:
DEBUG [GossipTasks:1] 2016-10-12 14:43:38,761 Gossiper.java:337 - > Convicting /172.31.137.65 with status hibernate - alive false That node has not been around for a very long time now. It does not show up in nodetool status and nodetool gossipinfo returns the following output about that node: /172.31.137.65 > generation:1433571405 > heartbeat:232 > STATUS:3:hibernate,true > LOAD:225:96445.0 > SCHEMA:53:e2d1a288-581c-3f35-b492-1b9d5a803631 > DC:9:us-east > RACK:11:1b > RELEASE_VERSION:7:2.1.5 > RPC_ADDRESS:6:172.31.137.65 > SEVERITY:231:0.2512562870979309 > NET_VERSION:4:8 > HOST_ID:5:7988d3c9-dec8-4b71-b5a9-0b962aad0680 > TOKENS:2:<hidden> nodetool removenode 7988d3c9-dec8-4b71-b5a9-0b962aad0680 resulted in: error: Host ID not found. > Now my questions are: 1. What does it mean for a node to be "hibernating"? How does it end up in that state? 2. How do I get rid of it? Its not coming back. -- Best regards, Kasper Middelboe Petersen *Lead Backend Developer* *SYBO Games ApS* Jorcks Passage 1A, 4th. 1162 Copenhagen K
