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From "Jun Rao (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-593) Empty log index file created when it shouldn't be empty
Date Mon, 05 Nov 2012 17:56:13 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-593?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490770#comment-13490770
] 

Jun Rao commented on KAFKA-593:
-------------------------------

Thanks for patch v3. Looks good. Some minor comments.

30. Log.rollToOffset():  segmentsView.last.index.file.getName.split("\\.")(0).toLong can just
be segmentsView.last.start.

31. Log.loadSegments(): Just to be consistent. Should we use index.maxIndexSize instead of
maxIndexSize in the following statement?
      logSegments.get(logSegments.size() - 1).index.resetSizeTo(maxIndexSize)

                
> Empty log index file created when it shouldn't be empty
> -------------------------------------------------------
>
>                 Key: KAFKA-593
>                 URL: https://issues.apache.org/jira/browse/KAFKA-593
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Yang Ye
>         Attachments: kafka_583_zk_kafka_data.tar.gz, kafka_593_v1.diff, kafka_593_v2.diff,
kafka_593_v3.diff
>
>
> We have met empty index file during system test when it shouldn't be empty. In this case,
there're around 100 messages in each segment, each of size around 100 bytes, given the "logIndexIntervalBytes"
4096, there should be at least 2 log index entries, but we see empty index file. The kafka
and zookeeper logs are attached
> [yye@yye-ld kafka_server_3_logs]$ cd test_1-2/
> [yye@yye-ld test_1-2]$ ls -l
> total 84
> -rw-r--r-- 1 yye eng        8 Oct 29 15:22 00000000000000000000.index
> -rw-r--r-- 1 yye eng    10248 Oct 29 15:22 00000000000000000000.log
> -rw-r--r-- 1 yye eng        8 Oct 29 15:22 00000000000000000100.index
> -rw-r--r-- 1 yye eng    10296 Oct 29 15:22 00000000000000000100.log
> -rw-r--r-- 1 yye eng        0 Oct 29 15:23 00000000000000000200.index
> -rw-r--r-- 1 yye eng    10293 Oct 29 15:23 00000000000000000200.log
> -rw-r--r-- 1 yye eng        0 Oct 29 15:23 00000000000000000300.index
> -rw-r--r-- 1 yye eng    10274 Oct 29 15:23 00000000000000000300.log
> -rw-r--r-- 1 yye eng        0 Oct 29 15:23 00000000000000000399.index
> -rw-r--r-- 1 yye eng    10276 Oct 29 15:23 00000000000000000399.log
> -rw-r--r-- 1 yye eng        0 Oct 29 15:23 00000000000000000498.index
> -rw-r--r-- 1 yye eng    10256 Oct 29 15:23 00000000000000000498.log
> -rw-r--r-- 1 yye eng 10485760 Oct 29 15:23 00000000000000000596.index
> -rw-r--r-- 1 yye eng     3564 Oct 29 15:23 00000000000000000596.log

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