Why our cluster some data nodes leaving cluster by itself?and why we have a node cpu/load so high?

(yue) #1

our cluster informations:
master nodes:3
data nodes:32C/60G(m4.4xlarge)
master nodes:4C/8G(c4.xlarge)
disk:6TB SSD (10000IOPS)

first question:
1, one of our cluster data nodes left cluster by itself, and we did not found any question from log, after
several minutes ,it join cluster by itself, but all shards will be reassign.
Second question:
1, one of our cluster always have high cpu and load, we check the log, the log like this

"Caused by: java.lang.IllegalStateException: Can't get text on a START_OBJECT at 1:620
at org.elasticsearch.common.xcontent.json.JsonXContentParser.text(JsonXContentParser.java:88) ~[elasticsearch-5.3.1.jar:5.3.1]
at org.elasticsearch.common.xcontent.support.AbstractXContentParser.textOrNull(AbstractXContentParser.java:221) ~[elasticsearch-5.3.1.jar:5.3.1]
at org.elasticsearch.index.mapper.TextFieldMapper.parseCreateField(TextFieldMapper.java:380) ~[elasticsearch-5.3.1.jar:5.3.1]
at org.elasticsearch.index.mapper.FieldMapper.parse(FieldMapper.java:287) ~[elasticsearch-5.3.1.jar:5.3.1]"

at last ,could you help me?

(system) #2

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