geedge-jira/md/OMPUB-1124.md

# 【E21现场】BOL-IGW-KVM-DT001产生OLAP Asset Open t oo many files告警

| ID | Creation Date | Assignee | Status |
|----|----------------|----------|--------|
| OMPUB-1124 | 2024-01-24T15:00:17.000+0800 | 戚岱杰 | 已关闭 |


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2024-01-22 17:21:56 产生BOL-IGW-KVM-DT001产生OLAP Asset Open t oo many files告警持续17小时。**qidaijie** commented on *2024-01-30T10:46:14.213+0800*:

该问题原因为：
 * BOL-IGW站点日志量高峰期12w/s
 * 在Flink框架中其使用堆外内存来作为Kafka的数据缓冲区；当出现数据量抖动或背压时，导致堆外内存溢出，任务频繁重启，占用了大量句柄。

 

解决方案：

Flink总内存不变的情况下，增加堆外内存的占比，由1GB增加至2GB。



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**qidaijie** commented on *2024-02-02T10:32:06.018+0800*:

在修复该问题后，经过一周观察，目前BOL-IGW-DT001文件句柄相对平稳，Flink任务未再出现重启的情况。

!BOL-IGW-DT001文件句柄.png|thumbnail!

该BUG转为持续观察状态。



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