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https://issues.apache.org/jira/browse/AMQ-6936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16411023#comment-16411023
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Rural Hunter commented on AMQ-6936:
-----------------------------------
These are the data files:
-rw-rw-r-- 1 activemq activemq 33554432 3月 23 11:46 db-13.log
-rw-rw-r-- 1 activemq activemq 33554432 3月 23 11:46 db-1.log
-rw-rw-r-- 1 activemq activemq 33554432 3月 23 11:46 db-2.log
-rw-rw-r-- 1 activemq activemq 33554432 3月 23 11:46 db-4.log
-rw-rw-r-- 1 activemq activemq 33554432 3月 23 11:46 db-5.log
-rw-rw-r-- 1 activemq activemq 33554454 3月 23 11:46 db-7.log
-rw-rw-r-- 1 activemq activemq 32768 3月 23 12:18 db.data
-rw-rw-r-- 1 activemq activemq 28720 3月 23 11:46 db.redo
db-7.log is larger than the maxFileLength = DEFAULT_MAX_FILE_LENGTH=33554432
> Dead loop on log file reading
> -----------------------------
>
> Key: AMQ-6936
> URL: https://issues.apache.org/jira/browse/AMQ-6936
> Project: ActiveMQ
> Issue Type: Bug
> Components: KahaDB
> Affects Versions: 5.13.4
> Reporter: Rural Hunter
> Priority: Critical
>
> We restarted our activemq instance(5.13.4) but found it hung on recovering
> data. I got the data and ran a debug and found these:
> # The dead loop is in Journal.getNextLocation(Location location)
> # I added log in the method and this is I got:
> 2018-03-23 14:56:43 [DEBUG] Journal Get next location for: 7:33554239
> 2018-03-23 14:56:43 [DEBUG] Journal Reading location: 7:33554330
> 2018-03-23 14:56:43 [DEBUG] Journal Location 7:33554330: offset=33554330,
> size=28, type=2
> 2018-03-23 14:56:43 [DEBUG] Journal Reading location: 7:33554358
> 2018-03-23 14:56:43 [DEBUG] Journal Location 7:33554358: offset=33554358,
> size=91, type=1
> 2018-03-23 14:56:43 [DEBUG] Journal Get next location for: 7:33554358
> 2018-03-23 14:56:43 [DEBUG] Journal Reading location: 7:33554449
> 2018-03-23 14:56:43 [DEBUG] Journal Location 7:33554449: offset=33554449,
> size=0, type=0
> 2018-03-23 14:56:43 [DEBUG] Journal Reading location: 7:33554432
> 2018-03-23 14:56:43 [DEBUG] Journal Location 7:33554432: offset=33554432,
> size=0, type=0
> 2018-03-23 14:56:43 [DEBUG] Journal Reading location: 7:33554432
> 2018-03-23 14:56:43 [DEBUG] Journal Location 7:33554432: offset=33554432,
> size=0, type=0
> 2018-03-23 14:56:43 [DEBUG] Journal Reading location: 7:33554432
> 2018-03-23 14:56:43 [DEBUG] Journal Location 7:33554432: offset=33554432,
> size=0, type=0
> 2018-03-23 14:56:43 [DEBUG] Journal Reading location: 7:33554432
> 2018-03-23 14:56:43 [DEBUG] Journal Location 7:33554432: offset=33554432,
> size=0, type=0
> 2018-03-23 14:56:43 [DEBUG] Journal Reading location: 7:33554432
> 2018-03-23 14:56:43 [DEBUG] Journal Location 7:33554432: offset=33554432,
> size=0, type=0
> # 33554432 is the max log file size. activemq read a location at the end of
> the file and the size is 0, this causes the dead loop
> I don't know if this is a problem when the file is saved or there is
> something need to be fixed when reading.
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