Forgot to mention that we're using ES 1.1.1 On Friday, September 12, 2014 9:21:23 AM UTC-4, Philippe Laflamme wrote: > > Hi, > > I have a cluster with nodes configured with a 18G heap. We've noticed a > degradation in performance recently after increasing the volume of data > we're indexing. > > I think the issue is due to the field data cache doing eviction. Some > nodes are doing lots of them, some aren't doing any. This is explained by > our routing strategy which results in non-uniform document distribution. > Maybe we can improve this eventually, but in the meantime, I'm trying to > understand why the nodes are evicting cached data. > > The metrics show that the field data cache is only ~1.5GB in size, yet we > have this in our elasticsearch.yml: > > indices.fielddata.cache.size: 10gb > > Why would a node evict cache entries when it should still have plenty of > room to store more? Are we missing another setting? Is there a way to tell > what the actual fielddata cache size is at runtime (maybe it did not pickup > the configuration setting for some reason)? > > Thanks, > Philippe >
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