Some brokers taking a long time to restart

[Jie Li]

Hello,

This is Jie from Pinterest.  We did a upgrade from 0.8.0 to 0.8.1 today
with rolling restart, but found some brokers took a very long time to
restart while some just restarted immediately.

Here are some debug logs:

[2014-03-25 23:17:13,381] DEBUG Adding index entry 41731335 => 248915234 to
00000000000041632481.index. (kafka.log.OffsetIndex)
[2014-03-25 23:17:13,381] DEBUG Adding index entry 41731338 => 248922262 to
00000000000041632481.index. (kafka.log.OffsetIndex)
[2014-03-25 23:17:13,381] DEBUG Adding index entry 41731340 => 248928782 to
00000000000041632481.index. (kafka.log.OffsetIndex)
[2014-03-25 23:17:13,381] DEBUG Adding index entry 41731343 => 248935723 to
00000000000041632481.index. (kafka.log.OffsetIndex)
[2014-03-25 23:17:13,381] DEBUG Adding index entry 41731346 => 248942845 to
00000000000041632481.index. (kafka.log.OffsetIndex)
[2014-03-25 23:17:13,381] DEBUG Adding index entry 41731348 => 248949551 to
00000000000041632481.index. (kafka.log.OffsetIndex)

Does anyone has idea?

Thanks,
Jie