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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-5355) Broker returns messages beyond "latest stable offset" to transactional consumer in read_committed mode
Date Sat, 03 Jun 2017 05:26:04 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-5355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16035834#comment-16035834
] 

ASF GitHub Bot commented on KAFKA-5355:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/kafka/pull/3221


> Broker returns messages beyond "latest stable offset" to transactional consumer in read_committed
mode
> ------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-5355
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5355
>             Project: Kafka
>          Issue Type: Sub-task
>          Components: core
>    Affects Versions: 0.11.0.0
>            Reporter: Matthias J. Sax
>            Assignee: Jason Gustafson
>            Priority: Blocker
>              Labels: exactly-once
>             Fix For: 0.11.0.0
>
>         Attachments: test.log
>
>
> This issue is exposed by the new Streams EOS integration test.
> Streams has two tasks (ie, two producers with {{pid}} 0 and 2000) both writing to output
topic {{output}} with one partition (replication factor 1).
> The test uses an transactional consumer with {{group.id=readCommitted}} to read the data
from {{output}} topic. When it read the data, each producer has committed 10 records (one
producer write messages with {{key=0}} and the other with {{key=1}}). Furthermore, each producer
has an open transaction and 5 uncommitted records written.
> The test fails, as we expect to see 10 records per key, but we get 15 for key=1:
> {noformat}
> java.lang.AssertionError: 
> Expected: <[KeyValue(1, 0), KeyValue(1, 1), KeyValue(1, 3), KeyValue(1, 6), KeyValue(1,
10), KeyValue(1, 15), KeyValue(1, 21), KeyValue(1, 28), KeyValue(1, 36), KeyValue(1, 45)]>
>      but: was <[KeyValue(1, 0), KeyValue(1, 1), KeyValue(1, 3), KeyValue(1, 6), KeyValue(1,
10), KeyValue(1, 15), KeyValue(1, 21), KeyValue(1, 28), KeyValue(1, 36), KeyValue(1, 45),
KeyValue(1, 55), KeyValue(1, 66), KeyValue(1, 78), KeyValue(1, 91), KeyValue(1, 105)]>
> {noformat}
> Dumping the segment shows, that there are two commit markers (one for each producer)
for the first 10 messages written. Furthermore, there are 5 pending records. Thus, "latest
stable offset" should be 21 (20 messages plus 2 commit markers) and not data should be returned
beyond this offset.
> Dumped Log Segment {{output-0}}
> {noformat}
> Starting offset: 0
> baseOffset: 0 lastOffset: 9 baseSequence: 0 lastSequence: 9 producerId: 0 producerEpoch:
6 partitionLeaderEpoch: 0 isTransactional: true position: 0 CreateTime: 1496255947332 isvalid:
true size: 291 magic: 2 compresscodec: NONE crc: 600535135
> baseOffset: 10 lastOffset: 10 baseSequence: -1 lastSequence: -1 producerId: 0 producerEpoch:
6 partitionLeaderEpoch: 0 isTransactional: true position: 291 CreateTime: 1496256005429 isvalid:
true size: 78 magic: 2 compresscodec: NONE crc: 3458060752
> baseOffset: 11 lastOffset: 20 baseSequence: 0 lastSequence: 9 producerId: 2000 producerEpoch:
2 partitionLeaderEpoch: 0 isTransactional: true position: 369 CreateTime: 1496255947322 isvalid:
true size: 291 magic: 2 compresscodec: NONE crc: 3392915713
> baseOffset: 21 lastOffset: 25 baseSequence: 10 lastSequence: 14 producerId: 0 producerEpoch:
6 partitionLeaderEpoch: 0 isTransactional: true position: 660 CreateTime: 1496255947342 isvalid:
true size: 176 magic: 2 compresscodec: NONE crc: 3513911368
> baseOffset: 26 lastOffset: 26 baseSequence: -1 lastSequence: -1 producerId: 2000 producerEpoch:
2 partitionLeaderEpoch: 0 isTransactional: true position: 836 CreateTime: 1496256011784 isvalid:
true size: 78 magic: 2 compresscodec: NONE crc: 1619151485
> {noformat}
> Dump with {{--deep-iteration}}
> {noformat}
> Starting offset: 0
> offset: 0 position: 0 CreateTime: 1496255947323 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 0 headerKeys: [] key: 1 payload: 0
> offset: 1 position: 0 CreateTime: 1496255947324 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 1 headerKeys: [] key: 1 payload: 1
> offset: 2 position: 0 CreateTime: 1496255947325 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 2 headerKeys: [] key: 1 payload: 3
> offset: 3 position: 0 CreateTime: 1496255947326 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 3 headerKeys: [] key: 1 payload: 6
> offset: 4 position: 0 CreateTime: 1496255947327 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 4 headerKeys: [] key: 1 payload: 10
> offset: 5 position: 0 CreateTime: 1496255947328 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 5 headerKeys: [] key: 1 payload: 15
> offset: 6 position: 0 CreateTime: 1496255947329 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 6 headerKeys: [] key: 1 payload: 21
> offset: 7 position: 0 CreateTime: 1496255947330 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 7 headerKeys: [] key: 1 payload: 28
> offset: 8 position: 0 CreateTime: 1496255947331 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 8 headerKeys: [] key: 1 payload: 36
> offset: 9 position: 0 CreateTime: 1496255947332 isvalid: true keysize: 8 valuesize: 8
magic: 2 compresscodec: NONE crc: 600535135 sequence: 9 headerKeys: [] key: 1 payload: 45
> offset: 10 position: 291 CreateTime: 1496256005429 isvalid: true keysize: 4 valuesize:
6 magic: 2 compresscodec: NONE crc: 3458060752 sequence: -1 headerKeys: [] endTxnMarker: COMMIT
coordinatorEpoch: 0
> offset: 11 position: 369 CreateTime: 1496255947313 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 0 headerKeys: [] key: 0 payload:
0
> offset: 12 position: 369 CreateTime: 1496255947314 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 1 headerKeys: [] key: 0 payload:
1
> offset: 13 position: 369 CreateTime: 1496255947315 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 2 headerKeys: [] key: 0 payload:
3
> offset: 14 position: 369 CreateTime: 1496255947316 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 3 headerKeys: [] key: 0 payload:
6
> offset: 15 position: 369 CreateTime: 1496255947317 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 4 headerKeys: [] key: 0 payload:
10
> offset: 16 position: 369 CreateTime: 1496255947318 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 5 headerKeys: [] key: 0 payload:
15
> offset: 17 position: 369 CreateTime: 1496255947319 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 6 headerKeys: [] key: 0 payload:
21
> offset: 18 position: 369 CreateTime: 1496255947320 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 7 headerKeys: [] key: 0 payload:
28
> offset: 19 position: 369 CreateTime: 1496255947321 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 8 headerKeys: [] key: 0 payload:
36
> offset: 20 position: 369 CreateTime: 1496255947322 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3392915713 sequence: 9 headerKeys: [] key: 0 payload:
45
> offset: 21 position: 660 CreateTime: 1496255947338 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3513911368 sequence: 10 headerKeys: [] key: 1 payload:
55
> offset: 22 position: 660 CreateTime: 1496255947339 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3513911368 sequence: 11 headerKeys: [] key: 1 payload:
66
> offset: 23 position: 660 CreateTime: 1496255947340 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3513911368 sequence: 12 headerKeys: [] key: 1 payload:
78
> offset: 24 position: 660 CreateTime: 1496255947341 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3513911368 sequence: 13 headerKeys: [] key: 1 payload:
91
> offset: 25 position: 660 CreateTime: 1496255947342 isvalid: true keysize: 8 valuesize:
8 magic: 2 compresscodec: NONE crc: 3513911368 sequence: 14 headerKeys: [] key: 1 payload:
105
> offset: 26 position: 836 CreateTime: 1496256011784 isvalid: true keysize: 4 valuesize:
6 magic: 2 compresscodec: NONE crc: 1619151485 sequence: -1 headerKeys: [] endTxnMarker: COMMIT
coordinatorEpoch: 0
> {noformat}
> The client log shows, that the reading and writing happen concurrently.
> {noformat}
> [2017-05-31 11:40:11,642] DEBUG Resetting offset for partition outputTopic-0 to offset
0. (org.apache.kafka.clients.consumer.internals.Fetcher:418)
> [2017-05-31 11:40:11,642] DEBUG Added fetch request for partition outputTopic-0 at offset
0 to node 127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:793)
> [2017-05-31 11:40:11,642] DEBUG Sending fetch for partitions [outputTopic-0] to broker
127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:203)
> [2017-05-31 11:40:11,643] DEBUG Added fetch request for partition outputTopic-0 at offset
11 to node 127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:793)
> [2017-05-31 11:40:11,643] DEBUG Sending fetch for partitions [outputTopic-0] to broker
127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:203)
> [2017-05-31 11:40:11,673] DEBUG TransactionalId: appId-1-0_1 -- Sending transactional
request (type=FindCoordinatorRequest, coordinatorKey=appId-1, coordinatorType=GROUP) (org.apache.kafka.clients.producer.internals.Sender:314)
> [2017-05-31 11:40:11,674] DEBUG TransactionalId appId-1-0_1 -- Received FindCoordinator
response with error NONE (org.apache.kafka.clients.producer.internals.TransactionManager:738)
> [2017-05-31 11:40:11,674] DEBUG TransactionalId: appId-1-0_1 -- Sending transactional
request (transactionalId=appId-1-0_1, producerId=2000, producerEpoch=2, consumerGroupId=appId-1,
offsets={inputTopic-1=CommittedOffset(offset=10, metadata='')}) (org.apache.kafka.clients.producer.internals.Sender:314)
> [2017-05-31 11:40:11,717] DEBUG Dest: 127.0.0.1:64267 (id: 0 rack: null) : producerId:
0, epoch: 6, Assigning sequence for outputTopic-0: 10 (org.apache.kafka.clients.producer.internals.RecordAccumulator:488)
> [2017-05-31 11:40:11,717] DEBUG Dest: 127.0.0.1:64273 (id: 2 rack: null) : producerId:
0, epoch: 6, Assigning sequence for appId-1-store-changelog-0: 10 (org.apache.kafka.clients.producer.internals.RecordAccumulator:488)
> [2017-05-31 11:40:11,718] DEBUG Incremented sequence number for topic-partition appId-1-store-changelog-0
to 15 (org.apache.kafka.clients.producer.internals.Sender:555)
> [2017-05-31 11:40:11,718] DEBUG Incremented sequence number for topic-partition outputTopic-0
to 15 (org.apache.kafka.clients.producer.internals.Sender:555)
> [2017-05-31 11:40:11,780] DEBUG TransactionalId appId-1-0_1 -- Received TxnOffsetCommit
response with errors {inputTopic-1=NONE} (org.apache.kafka.clients.producer.internals.TransactionManager:900)
> [2017-05-31 11:40:11,780] DEBUG TransactionalId appId-1-0_1 -- Transition from state
IN_TRANSACTION to COMMITTING_TRANSACTION (org.apache.kafka.clients.producer.internals.TransactionManager:427)
> [2017-05-31 11:40:11,780] DEBUG TransactionalId: appId-1-0_1 -- Sending transactional
request (transactionalId=appId-1-0_1, producerId=2000, producerEpoch=2, result=COMMIT) (org.apache.kafka.clients.producer.internals.Sender:314)
> [2017-05-31 11:40:11,782] DEBUG TransactionalId appId-1-0_1 -- Received EndTxn response
with error NONE (org.apache.kafka.clients.producer.internals.TransactionManager:792)
> [2017-05-31 11:40:11,782] DEBUG TransactionalId appId-1-0_1 -- Transition from state
COMMITTING_TRANSACTION to READY (org.apache.kafka.clients.producer.internals.TransactionManager:427)
> [2017-05-31 11:40:11,782] DEBUG TransactionalId appId-1-0_1 -- Transition from state
READY to IN_TRANSACTION (org.apache.kafka.clients.producer.internals.TransactionManager:427)
> [2017-05-31 11:40:11,782] DEBUG Initiating connection to node 0 at 127.0.0.1:64267. (org.apache.kafka.clients.NetworkClient:707)
> [2017-05-31 11:40:11,782] DEBUG Added fetch request for partition inputTopic-1 at offset
11 to node 127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:793)
> [2017-05-31 11:40:11,782] DEBUG Sending fetch for partitions [inputTopic-1] to broker
127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:203)
> [2017-05-31 11:40:11,783] DEBUG Completed connection to node 0.  Ready. (org.apache.kafka.clients.NetworkClient:672)
> [2017-05-31 11:40:11,783] DEBUG TransactionalId: appId-1-0_1 -- Sending transactional
request (transactionalId=appId-1-0_1, producerId=2000, producerEpoch=2, partitions=[outputTopic-0,
appId-1-store-changelog-1]) (org.apache.kafka.clients.producer.internals.Sender:314)
> [2017-05-31 11:40:11,784] DEBUG Added fetch request for partition inputTopic-1 at offset
15 to node 127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:793)
> [2017-05-31 11:40:11,784] DEBUG Sending fetch for partitions [inputTopic-1] to broker
127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:203)
> [2017-05-31 11:40:11,784] DEBUG TransactionalId appId-1-0_1 -- Received AddPartitionsToTxn
response with errors {outputTopic-0=CONCURRENT_TRANSACTIONS, appId-1-store-changelog-1=CONCURRENT_TRANSACTIONS}
(org.apache.kafka.clients.producer.internals.TransactionManager:658)
> [2017-05-31 11:40:11,784] DEBUG TransactionalId: appId-1-0_1 -- Sending transactional
request (transactionalId=appId-1-0_1, producerId=2000, producerEpoch=2, partitions=[outputTopic-0,
appId-1-store-changelog-1]) (org.apache.kafka.clients.producer.internals.Sender:314)
> [2017-05-31 11:40:11,784] DEBUG Added fetch request for partition outputTopic-0 at offset
27 to node 127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:793)
> [2017-05-31 11:40:11,785] DEBUG Sending fetch for partitions [outputTopic-0] to broker
127.0.0.1:64267 (id: 0 rack: null) (org.apache.kafka.clients.consumer.internals.Fetcher:203)
> {noformat}
> (full log attached)



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