elasticsearch连接常见问题 ElasticSearch

### elasticsearch.yml常见配置参考
```
# 避免发生OOM，发生OOM对集群影响很大的
indices.breaker.total.limit: 60%

# 有了这个设置，最久未使用（LRU）的 fielddata 会被回收为新数据腾出空间
indices.fielddata.cache.size: 40%

# fielddata 断路器默认设置堆的  作为 fielddata 大小的上限。
indices.breaker.fielddata.limit: 60%

# request 断路器估算需要完成其他请求部分的结构大小，例如创建一个聚合桶，默认限制是堆内存
indices.breaker.request.limit: 60%

# 父级断路器是否应考虑实际内存使用情况（true）或仅考虑子级断路器保留的数量（false）。默认为true
# 整个父级断点器的启动限制，如果indices.breaker.total.use_real_memory: false 默认为JVM堆的70％ of the JVM heap., 否则为95% of the JVM heap
indices.breaker.total.use_real_memory: false

#indices.breaker.type: none
```

### 无法添加数据
```
es7.6使用RestHighLevelClient连接，添加数据报错：
```
```
ElasticsearchStatusException[Elasticsearch exception [type=circuit_breaking_exception, reason=[parent] Data too large, data for [<http_request>] would be [1663333912/1.5gb], which is larger than the limit of [1662202675/1.5gb], real usage: [1659250080/1.5gb], new bytes reserved: [4083832/3.8mb], usages [request=1359872/1.2mb, fielddata=0/0b, in_flight_requests=17784334/16.9mb, accounting=551349/538.4kb]]]
  at org.elasticsearch.rest.BytesRestResponse.errorFromXContent(BytesRestResponse.java:177)
  at org.elasticsearch.client.RestHighLevelClient.parseEntity(RestHighLevelClient.java:1793)
  at org.elasticsearch.client.RestHighLevelClient.parseResponseException(RestHighLevelClient.java:1770)
  at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1527)
  at org.elasticsearch.client.RestHighLevelClient.performRequest(RestHighLevelClient.java:1484)
  at org.elasticsearch.client.RestHighLevelClient.performRequestAndParseEntity(RestHighLevelClient.java:1454)
  at org.elasticsearch.client.RestHighLevelClient.bulk(RestHighLevelClient.java:497)
  at com.zhuge.es.service.impl.EsDataServiceImpl.bulk(EsDataServiceImpl.java:73)
  at com.zhuge.es.service.impl.EsDataServiceImpl.access$100(EsDataServiceImpl.java:36)
  at com.zhuge.es.service.impl.EsDataServiceImpl$1.run(EsDataServiceImpl.java:177)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
  at java.lang.Thread.run(Thread.java:745)
  Suppressed: org.elasticsearch.client.ResponseException: method [POST], host [http://54.222.139.120:9200], URI [/_bulk?timeout=1m], status line [HTTP/1.1 429 Too Many Requests]
{"error":{"root_cause":[{"type":"circuit_breaking_exception","reason":"[parent] Data too large, data for [<http_request>] would be [1663333912/1.5gb], which is larger than the limit of [1662202675/1.5gb], real usage: [1659250080/1.5gb], new bytes reserved: [4083832/3.8mb], usages [request=1359872/1.2mb, fielddata=0/0b, in_flight_requests=17784334/16.9mb, accounting=551349/538.4kb]","bytes_wanted":1663333912,"bytes_limit":1662202675,"durability":"TRANSIENT"}],"type":"circuit_breaking_exception","reason":"[parent] Data too large, data for [<http_request>] would be [1663333912/1.5gb], which is larger than the limit of [1662202675/1.5gb], real usage: [1659250080/1.5gb], new bytes reserved: [4083832/3.8mb], usages [request=1359872/1.2mb, fielddata=0/0b, in_flight_requests=17784334/16.9mb, accounting=551349/538.4kb]","bytes_wanted":1663333912,"bytes_limit":1662202675,"durability":"TRANSIENT"},"status":429}
    at org.elasticsearch.client.RestClient.convertResponse(RestClient.java:283)
    at org.elasticsearch.client.RestClient.performRequest(RestClient.java:261)
    at org.elasticsearch.client.RestClient.performRequest(RestClient.java:235)
    at org.elasticsearch.client.RestHighLevelClient.internalPerformRequest(RestHighLevelClient.java:1514)
    ... 9 more
```
```
解决办法一：

es服务elasticsearch.yml配置文件添加：
indices.breaker.total.use_real_memory: false

解决办法二：

es服务elasticsearch.yml配置文件添加：
indices.breaker.type: none

方法二该配置不清楚，只知道加了就好了，推荐方法一。
```

vanki

水的清澈，并非因为它不含杂质，而是在于懂得沉淀。

创建： 2020-05-09 13:47:52

更新： 2020-05-22 11:14:17

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