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Support skip invalid journal record in replying journal stage #3956

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merged 7 commits into from
Jun 19, 2023

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hangc0276
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@hangc0276 hangc0276 commented May 15, 2023

Motivation

This PR is generated from #3437
Fix #2220

When we use kill -9 command to stop one bookie pod, the journal file may be broken. If we try to start up the bookie pod again, the pod will startup to fail with the following exception.

10:15:55.026 [main] ERROR org.apache.bookkeeper.bookie.Bookie - Exception while replaying journals, shutting down
java.io.IOException: Invalid record found with negative length -448299468
        at org.apache.bookkeeper.bookie.Journal.scanJournal(Journal.java:821) ~[org.apache.bookkeeper-bookkeeper-server-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.bookie.Bookie.replay(Bookie.java:945) ~[org.apache.bookkeeper-bookkeeper-server-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.bookie.Bookie.readJournal(Bookie.java:911) ~[org.apache.bookkeeper-bookkeeper-server-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.bookie.Bookie.start(Bookie.java:965) ~[org.apache.bookkeeper-bookkeeper-server-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.proto.BookieServer.start(BookieServer.java:156) ~[org.apache.bookkeeper-bookkeeper-server-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.server.service.BookieService.doStart(BookieService.java:68) ~[org.apache.bookkeeper-bookkeeper-server-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:83) ~[org.apache.bookkeeper-bookkeeper-common-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.common.component.LifecycleComponentStack.lambda$start$4(LifecycleComponentStack.java:144) ~[org.apache.bookkeeper-bookkeeper-common-4.12.0.jar:4.12.0]
        at com.google.common.collect.ImmutableList.forEach(ImmutableList.java:406) [com.google.guava-guava-30.1-jre.jar:?]
        at org.apache.bookkeeper.common.component.LifecycleComponentStack.start(LifecycleComponentStack.java:144) [org.apache.bookkeeper-bookkeeper-common-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.common.component.ComponentStarter.startComponent(ComponentStarter.java:85) [org.apache.bookkeeper-bookkeeper-common-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.server.Main.doMain(Main.java:234) [org.apache.bookkeeper-bookkeeper-server-4.12.0.jar:4.12.0]
        at org.apache.bookkeeper.server.Main.main(Main.java:208) [org.apache.bookkeeper-bookkeeper-server-4.12.0.jar:4.12.0]
10:15:55.134 [main] INFO  org.apache.zookeeper.ZooKeeper - Session: 0x200064a14681be2 closed

We should have a way to make the bookie pod startup instead of decommissioning it.

Changes

  1. Add a configuration to allow skipping the invalid entries when journal replying to journal files.

@hangc0276
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@frankjkelly I have created a new PR to fix the bookie that can't startup due to the journal reply failing.

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Overall LGTM, but I would set the property to true by default

* @see #isSkipReplayJournalInvalidRecord .
*/
public boolean isSkipReplayJournalInvalidRecord() {
return this.getBoolean(SKIP_REPLAY_JOURNAL_INVALID_RECORD, false);
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the previous behaviour was to skip errors, we should keep the same value

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The previous behavior is to throw the exception out and block the bookie start-up. We should keep the same behavior.

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Even though the previous default behavior is false, I changed the default value to true, because I think it's valuable to skip the the invalid record instead of make the bookie node can't start up.

Comment on lines 831 to 839
try {
if (len == PADDING_MASK && journalVersion >= JournalChannel.V5) {
// skip padding bytes
lenBuff.clear();
fullRead(recLog, lenBuff);
if (lenBuff.remaining() != 0) {
break;
}
lenBuff.flip();
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line 820 may throw IOException, this may cause bookie startup failed ==> fullRead(recLog, lenBuff);
In this PR, line 835 also may throw IOException, because this future the bookie can continue starting.
Same behavior here, two results, right?

https://github.com/apache/bookkeeper/pull/3956/files#diff-0a79d54e3dfd4bab1d85510ef957f8f4b7ab6f6acd09aadd634b4d7bbee6e1f4R815-R821

            while (true) {
                // entry start offset
                long offset = recLog.fc.position();
                // start reading entry
                lenBuff.clear();
                fullRead(recLog, lenBuff);

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I caught all the fullRead throw exceptions.

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@wenbingshen wenbingshen left a comment

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LGTM

@wenbingshen
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rerun failure checks

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@hangc0276
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rerun failure checks

@frankjkelly
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Hi folks - thanks for the efforts here - what are the remaining issues on this? Thanks!

@hangc0276 hangc0276 closed this Jun 16, 2023
@hangc0276 hangc0276 reopened this Jun 16, 2023
@zymap
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zymap commented Jun 19, 2023

@eolivelli Would you like to take another look at this PR?

@hangc0276
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Hi folks - thanks for the efforts here - what are the remaining issues on this? Thanks!

@frankjkelly I addressed all the comments, please help take a look, thanks.

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+1

@eolivelli eolivelli merged commit 5e9fdc2 into apache:master Jun 19, 2023
@frankjkelly
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Thanks everyone for this - much appreciated

hangc0276 added a commit to hangc0276/bookkeeper that referenced this pull request Jun 26, 2023
zymap pushed a commit that referenced this pull request Aug 29, 2023
zymap pushed a commit that referenced this pull request Dec 6, 2023
@vitalii-buchyn-exa
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hello community,
any documentation update for this feature?

Ghatage pushed a commit to sijie/bookkeeper that referenced this pull request Jul 12, 2024
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Exception while replaying journals, shutting down
6 participants