You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@cassandra.apache.org by "Brent (JIRA)" <ji...@apache.org> on 2019/05/06 14:50:00 UTC
[jira] [Updated] (CASSANDRA-15119) Repair fails randomly, causing
nodes to restart
[ https://issues.apache.org/jira/browse/CASSANDRA-15119?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Brent updated CASSANDRA-15119:
------------------------------
Description:
We have a cluster of 3 nodes (same dc) that is ~8GB on disk (per node). One keyspace has two tables, combined having about 20m rows with around 20 colums each. Whenever we try to run a repair (with or without cassandra-reaper, on any setting) the repair causes certain nodes to fail and restart. Originally these nodes had the default heap space calculation on a device with 12GB ram.
We upscaled these to 24GB ram and 12GB XMX which seemed to make a difference but still not quite enough. With JProfiler we can see that random nodes reach the xmx limit, regardless of the size of the repair, while streaming data.
I can't understand that such operations can cause servers to literally crash rather than just say "no I can't do it". We've tried a lot of things including setting up a fresh cluster and manually inserting all the data (with the correct replication factor) and then run repairs.
Sometimes they will work (barely) sometimes they will fail. I really don't understand.
We're running cassandra 3.11.4.
Could I receive some assistance in troubleshooting this?
was:
We have a cluster of 3 nodes (same dc) that is ~8GB on disk (per node). One keyspace has two tables, combined having about 20m rows with around 20 colums each. Whenever we try to run a repair (with or without cassandra-reaper, on any setting) the repair causes certain nodes to fail and restart. Originally these nodes had the default heap space calculation on a device with 12GB ram.
We upscaled these to 24GB ram and 12GB XMX which seemed to make a difference but still not quite enough. With JProfiler we can see that random nodes reach the xmx limit, regardless of the size of the repair, while streaming data.
I can't understand that such operations can cause servers to literally crash rather than just say "no I can't do it". We've tried a lot of things including setting up a fresh cluster and manually inserting all the data (with the correct replication factor) and then run repairs.
Sometimes they will work (barely) sometimes they will fail. I really don't understand.
We're running cassandra 3.11.4.
> Repair fails randomly, causing nodes to restart
> -----------------------------------------------
>
> Key: CASSANDRA-15119
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15119
> Project: Cassandra
> Issue Type: Bug
> Components: Consistency/Repair, Consistency/Streaming
> Reporter: Brent
> Priority: Normal
>
> We have a cluster of 3 nodes (same dc) that is ~8GB on disk (per node). One keyspace has two tables, combined having about 20m rows with around 20 colums each. Whenever we try to run a repair (with or without cassandra-reaper, on any setting) the repair causes certain nodes to fail and restart. Originally these nodes had the default heap space calculation on a device with 12GB ram.
> We upscaled these to 24GB ram and 12GB XMX which seemed to make a difference but still not quite enough. With JProfiler we can see that random nodes reach the xmx limit, regardless of the size of the repair, while streaming data.
> I can't understand that such operations can cause servers to literally crash rather than just say "no I can't do it". We've tried a lot of things including setting up a fresh cluster and manually inserting all the data (with the correct replication factor) and then run repairs.
> Sometimes they will work (barely) sometimes they will fail. I really don't understand.
> We're running cassandra 3.11.4.
> Could I receive some assistance in troubleshooting this?
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
---------------------------------------------------------------------
To unsubscribe, e-mail: commits-unsubscribe@cassandra.apache.org
For additional commands, e-mail: commits-help@cassandra.apache.org