November 2022
Beginner to intermediate
346 pages
11h
Chinese
Content preview from Kafka权威指南（第2版）
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--batch-size
指定在采用非同步发送方式时单个批次发送的消息数量。
--timeout
指定生产者在采用异步发送模式时等待批次填满消息的最长时间，以避免其在低吞吐量
的情况下等待太长时间。
--compression-codec <string>
指定生成消息所使用的压缩类型，可以是
none
、
gzip
、
snappy
、
zstd
或
lz4
，默认值
是
gzip
。
--sync
指定以同步的方式发送消息。也就是说，在发送下一条消息之前需要等待当前消息被
确认。
2.
文本行读取器配置参数
kafka.tools.ConsoleProducer$LineMessageReader
类负责读取标准输入，并基于读取到
的内容创建要发送给
Kafka
的消息
。它也有一些非常有用的配置参数，我们可以通过
--property
把这些配置参数传给控制台生产者。
ignore.error
如果设置为
false
，那么在
parse.key
被设置为
true
而标准输入中没有包含键分隔符时
就会抛出异常。默认值为
true
。
parse.key
如果设置为
false
，那么生成的消息的键就为空。默认值为
true
。
key.separator
消息的键和值之间的分隔符。默认使用
Tab
字符。
改变命令行的读取行为
如果有必要，那么可以使用自定义类来读取命令行输入。自定义类必须继承
kafka.common.MessageReader
，并负责创建
ProducerRecord
对象。然后，我们
通过
--line-reader
参数来指定这个类，并确保包含这个类的 ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.