dengziming created HUDI-596:
-------------------------------
Summary: KafkaConsumer need to be close
Key: HUDI-596
URL: https://issues.apache.org/jira/browse/HUDI-596
Project: Apache Hudi (incubating)
Issue Type: Bug
Components: Utilities
Reporter: dengziming
`offsetGen.getNextOffsetRanges` will is called periodically in DeltaStreamer
application, and it will `new KafkaConsumer(kafkaParams)` without close, and
Exception will throw after a while.
```
java.net.SocketException: Too many open files
at sun.nio.ch.Net.socket0(Native Method)
at sun.nio.ch.Net.socket(Net.java:411)
at sun.nio.ch.Net.socket(Net.java:404)
at sun.nio.ch.SocketChannelImpl.<init>(SocketChannelImpl.java:105)
at
sun.nio.ch.SelectorProviderImpl.openSocketChannel(SelectorProviderImpl.java:60)
at java.nio.channels.SocketChannel.open(SocketChannel.java:145)
at org.apache.kafka.common.network.Selector.connect(Selector.java:211)
at
org.apache.kafka.clients.NetworkClient.initiateConnect(NetworkClient.java:864)
at org.apache.kafka.clients.NetworkClient.ready(NetworkClient.java:265)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.trySend(ConsumerNetworkClient.java:485)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:261)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:242)
at
org.apache.kafka.clients.consumer.internals.ConsumerNetworkClient.poll(ConsumerNetworkClient.java:218)
at
org.apache.kafka.clients.consumer.internals.Fetcher.getTopicMetadata(Fetcher.java:274)
at
org.apache.kafka.clients.consumer.KafkaConsumer.partitionsFor(KafkaConsumer.java:1774)
at
org.apache.kafka.clients.consumer.KafkaConsumer.partitionsFor(KafkaConsumer.java:1742)
at
org.apache.hudi.utilities.sources.helpers.KafkaOffsetGen.getNextOffsetRanges(KafkaOffsetGen.java:177)
at
org.apache.hudi.utilities.sources.JsonKafkaSource.fetchNewData(JsonKafkaSource.java:56)
at org.apache.hudi.utilities.sources.Source.fetchNext(Source.java:73)
at
org.apache.hudi.utilities.deltastreamer.SourceFormatAdapter.fetchNewDataInRowFormat(SourceFormatAdapter.java:107)
at
org.apache.hudi.utilities.deltastreamer.DeltaSync.readFromSource(DeltaSync.java:288)
at
org.apache.hudi.utilities.deltastreamer.DeltaSync.syncOnce(DeltaSync.java:226)
```
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