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https://issues.apache.org/jira/browse/KAFKA-662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13548683#comment-13548683
 ] 

John Fung commented on KAFKA-662:
---------------------------------

1. testcase_9071 - This testcase is to test the basic behavior of unclean 
shutdown where no log truncation takes place.

B1           B2
=======      =======

a. Both brokers are up running

b. Send 5 messages

m0            m0
m1            m1
m2            m2
m3            m3
m4            m4

c. Shut down B2

d. Send 5 messages

m5
m6
m7
m8
m9

e. Shut down B1 (B1 & B2 are both down)

f. Sleep 5 seconds

g. Start B2 (B1 is still down)

h. Send 5 messages

               m10
               m11
               m12
               m13
               m14

i. Start B1 (both B1 & B2 are up running)

Recovering ...

j. Since there are no discrepancy in no. of messages maintained by the internal 
"index", there will not be any log truncation:

m0            m0
m1            m1
m2            m2
m3            m3
m4            m4
m5            m10
m6            m11
m7            m12
m8            m13
m9            m14


$ bin/kafka-run-class.sh kafka.tools.DumpLogSegments --print-data-log --files 
/tmp/kafka_server_1_logs/t001-0/00000000000000000000.log
Dumping /tmp/kafka_server_1_logs/t001-0/00000000000000000000.log
Starting offset: 0
offset: 0 position: 0 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 2307843899 payload: 
Topic:t001:ThreadID:0:MessageID:0000000000
offset: 1 position: 126 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 3770868426 payload: 
Topic:t001:ThreadID:0:MessageID:0000000001
offset: 2 position: 252 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 1528229081 payload: 
Topic:t001:ThreadID:0:MessageID:0000000002
offset: 3 position: 378 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 844818728 payload: 
Topic:t001:ThreadID:0:MessageID:0000000003
offset: 4 position: 504 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 4157601470 payload: 
Topic:t001:ThreadID:0:MessageID:0000000004
offset: 5 position: 630 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 2659447631 payload: 
Topic:t001:ThreadID:0:MessageID:0000000005
offset: 6 position: 756 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 626523484 payload: 
Topic:t001:ThreadID:0:MessageID:0000000006
offset: 7 position: 882 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 1276901549 payload: 
Topic:t001:ThreadID:0:MessageID:0000000007
offset: 8 position: 1008 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 1963770929 payload: 
Topic:t001:ThreadID:0:MessageID:0000000008
offset: 9 position: 1134 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 474005952 payload: 
Topic:t001:ThreadID:0:MessageID:0000000009

$ bin/kafka-run-class.sh kafka.tools.DumpLogSegments --print-data-log --files 
/tmp/kafka_server_2_logs/t001-0/00000000000000000000.log
Dumping /tmp/kafka_server_2_logs/t001-0/00000000000000000000.log
Starting offset: 0
offset: 0 position: 0 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 2307843899 payload: 
Topic:t001:ThreadID:0:MessageID:0000000000
offset: 1 position: 126 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 3770868426 payload: 
Topic:t001:ThreadID:0:MessageID:0000000001
offset: 2 position: 252 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 1528229081 payload: 
Topic:t001:ThreadID:0:MessageID:0000000002
offset: 3 position: 378 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 844818728 payload: 
Topic:t001:ThreadID:0:MessageID:0000000003
offset: 4 position: 504 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 4157601470 payload: 
Topic:t001:ThreadID:0:MessageID:0000000004
offset: 5 position: 630 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 1130195380 payload: 
Topic:t001:ThreadID:0:MessageID:0000000010
offset: 6 position: 756 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 705784901 payload: 
Topic:t001:ThreadID:0:MessageID:0000000011
offset: 7 position: 882 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 2445632086 payload: 
Topic:t001:ThreadID:0:MessageID:0000000012
offset: 8 position: 1008 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 4169754535 payload: 
Topic:t001:ThreadID:0:MessageID:0000000013
offset: 9 position: 1134 isvalid: true payloadsize: 100 magic: 0 compresscodec: 
NoCompressionCodec crc: 1025275953 payload: 
Topic:t001:ThreadID:0:MessageID:0000000014


                
> Create testcases for unclean shut down
> --------------------------------------
>
>                 Key: KAFKA-662
>                 URL: https://issues.apache.org/jira/browse/KAFKA-662
>             Project: Kafka
>          Issue Type: Task
>            Reporter: John Fung
>            Assignee: John Fung
>


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