That's once in few days, so I don't think it's too important. Especially since 0.77 is much better than 0.99 I've seen sometimes :)

26.01.12 02:49, aaron morton написав(ла):
You are running into GC issues.

WARN [ScheduledTasks:1] 2012-01-22 12:53:42,804 GCInspector.java (line 146) Heap is 0.7767292149986439 full. You may need to reduce memtable and/or cache sizes. Cassandra will now flush up to the two largest memtables to free up memory. Adjust flush_largest_memtables_at threshold in cassandra.yaml if you don't want Cassandra to do this automatically

Can you reduce the size of the caches ?

As you are under low load, does it correlate with compaction or repair processes ? Check node tool compactioninfo

Do you have wide rows ? Checlk the max row size with nodetool cfstats.

Also, if you have made any changes to the default memory and gc settings try reverting them.



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