January 2018
Beginner to intermediate
234 pages
7h 8m
Chinese
Content preview from Kafka权威指南
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管理
Kafka
｜
151
],
"topic": "my-topic"
}
],
"version": 1
}
也可以通过类似的方式减小分区的复制系数。
9.4.4
转储日志片段
如果需要查看某个特定消息的内容，比如一个消费者无法处理的“毒药”消息，可以使用工
具来解码分区的日志片段。该工具可以让你在不读取消息的情况下查看消息的内容。它接受
一个以逗号分隔的日志片段文件清单作为参数，并打印出每个消息的概要信息和数据内容。
示例：解码日志片段
00000000000052368601.log
，显示消息的概要信息。
# kafka-run-class.sh kafka.tools.DumpLogSegments --files
00000000000052368601.log
Dumping 00000000000052368601.log
Starting offset: 52368601
offset: 52368601 position: 0 NoTimestampType: -1 isvalid:true
payloadsize: 661 magic: 0 compresscodec: GZIPCompressionCodec crc:
1194341321
offset: 52368603 position: 687 NoTimestampType: -1 isvalid: true
payloadsize:895 magic: 0 compresscodec: GZIPCompressionCodec ...
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