Apache Flink

Anyone faced this problem ?
```Caused by: org.apache.kafka.common.KafkaException: java.io.IOException: Too many open files
    at org.apache.kafka.common.network.Selector.&lt;init&gt;(Selector.java:161)
    at org.apache.kafka.common.network.Selector.&lt;init&gt;(Selector.java:212)
    at org.apache.kafka.common.network.Selector.&lt;init&gt;(Selector.java:224)
    at org.apache.kafka.common.network.Selector.&lt;init&gt;(Selector.java:228)
    at org.apache.kafka.clients.consumer.KafkaConsumer.&lt;init&gt;(KafkaConsumer.java:745)
    ... 26 more
Caused by: java.io.IOException: Too many open files
    at java.base/sun.nio.ch.EPoll.create(Native Method)
    at java.base/sun.nio.ch.EPollSelectorImpl.&lt;init&gt;(EPollSelectorImpl.java:79)
    at java.base/sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:36)
    at java.base/java.nio.channels.Selector.open(Selector.java:295)
    at org.apache.kafka.common.network.Selector.&lt;init&gt;(Selector.java:159)
    ... 30 more```

You have hit a limit on the number of file descriptors maybe check
```ulimit -n ```
to see what the limit is

```ulimit -n &lt;new-limit&gt; ```
you can increase it. But its likely some resources are not being closed off so you should check that also.