January 2018
Beginner to intermediate
234 pages
7h 8m
Chinese
Content preview from Kafka权威指南
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152
｜
第
9
章
引文件损坏，会导致消费者在读取消息时出现错误。
broker
在不正常启动（比如之前没有
正常关闭）时会自动执行这个验证过程，不过也可以手动执行它。有两个参数可以用于指
定不同程度的验证，
--index-sanity-check 将会检查无用的索引，而 --verify-index-only
将会检查索引的匹配度，但不会打印出所有的索引。
示例：验证日志片段
00000000000052368601.log
索引文件的正确性。
# kafka-run-class.sh kafka.tools.DumpLogSegments --files
00000000000052368601.index,00000000000052368601.log
--index-sanity-check
Dumping 00000000000052368601.index
00000000000052368601.index passed sanity check.
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: ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.