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geedge-jira/md/OMPUB-628.md
2025-09-14 21:52:36 +00:00

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# 【E21现场】国家中心多台OLAP服务器持续内存告警
| ID | Creation Date | Assignee | Status |
|----|----------------|----------|--------|
| OMPUB-628 | 2022-09-19T15:23:08.000+0800 | 戚岱杰 | 已关闭 |
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国家中心多台OLAP服务器持续告警仍在新增告警今天OLAP Server-20达到告警阈值。
以下是目前存在的告警消息:
OLAP Server-16
OLAP Server-17
OLAP Server-18
OLAP Server-19
OLAP Server-20
OLAP Server-21**qidaijie** commented on *2022-10-20T10:48:01.642+0800*:
经排查,有以下两个问题:
# 告警发生时国家中心Kafka存在异常对Flink处理数据有较大影响。
# Flink内存参数配置过高忽略了进程本身的内存占用导致在该配置下Flink可以申请的内存过多计算后占总内存的90%。
## 当前Flink计算实际平均使用内存占总内存的50%左右。 !Flink内存使用.png|thumbnail!
 
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**qidaijie** commented on *2022-10-26T19:09:52.512+0800*:
[~liuju] 针对该问题进行以下操作进行优化国家中心Flink内存使用 [^Flink内存优化文档.txt]
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**liuju** commented on *2022-10-26T20:09:53.340+0800*:
收到
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**liuju** commented on *2022-10-29T01:08:11.297+0800*:
有更新完毕。
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**liuju** commented on *2022-10-31T15:52:14.069+0800*:
目前观察内存正常,未再出现内存告警,先关闭该问题,会继续观察后续持续效果,若有异常再开启
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## Attachments
**31890/Flink内存使用.png**
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**32220/Flink内存优化文档.txt**
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