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apache / bookkeeper / edffdd6dc261c3a9222751187a9f5ac601e9b1fa
commitedffdd6dc261c3a9222751187a9f5ac601e9b1fa[log] [tgz]
authorAndras Beni <andras.beni@streamnative.io>Mon Mar 21 16:06:01 2022 +0100
committerGitHub <noreply@github.com>Mon Mar 21 08:06:01 2022 -0700
treea3bb388f573e1da61a5f9669111c44ed4db6c43b
parent7bb0bfcafbfb7cb2ee330707e082f27c3a8fd530 [diff]
Log NoLedgerException on debug level (#3117)

NoLedgerException does not signify an error in the Bookie that needs
to be fixed. Instead it is - at most - a user error that the user is
notified about via the status code ENOLEDGER.
Logging this problem at error level introduces an odd difference
between the behavior of readLac using v2 versus v3 protocol version.
In the former case ReadEntryProcessor logs the same problem at debug
level. As a result changing protocol version appers to be introducing
an error.
1 file changed
tree: a3bb388f573e1da61a5f9669111c44ed4db6c43b
  1. .github/
  2. .test-infra/
  3. bin/
  4. bookkeeper-benchmark/
  5. bookkeeper-common/
  6. bookkeeper-common-allocator/
  7. bookkeeper-dist/
  8. bookkeeper-http/
  9. bookkeeper-proto/
  10. bookkeeper-server/
  11. bookkeeper-stats/
  12. bookkeeper-stats-providers/
  13. buildtools/
  14. circe-checksum/
  15. conf/
  16. cpu-affinity/
  17. deploy/
  18. dev/
  19. docker/
  20. gradle/
  21. metadata-drivers/
  22. microbenchmarks/
  23. shaded/
  24. site/
  25. site2/
  26. site3/
  27. src/
  28. stats/
  29. stream/
  30. tests/
  31. tools/
  32. .gitignore
  33. build.gradle
  34. dependencies.gradle
  35. gradle.properties
  36. gradlew
  37. gradlew.bat
  38. LICENSE
  39. NOTICE
  40. README.md
  41. settings.gradle
  42. version.gradle
README.md

Maven Central

Apache BookKeeper

Apache BookKeeper is a scalable, fault tolerant and low latency storage service optimized for append-only workloads.

It is suitable for being used in following scenarios:

  • WAL (Write-Ahead-Logging), e.g. HDFS NameNode.
  • Message Store, e.g. Apache Pulsar.
  • Offset/Cursor Store, e.g. Apache Pulsar.
  • Object/Blob Store, e.g. storing state machine snapshots.

Get Started

  • Checkout the project website.
  • Concepts: Start with the basic concepts of Apache BookKeeper. This will help you to fully understand the other parts of the documentation.
  • Follow the Install guide to setup BookKeeper.

Documentation

Please visit the Documentation from the project website for more information.

Get In Touch

Report a Bug

For filing bugs, suggesting improvements, or requesting new features, help us out by opening a Github issue.

Need Help?

Subscribe or mail the user@bookkeeper.apache.org list - Ask questions, find answers, and also help other users.

Subscribe or mail the dev@bookkeeper.apache.org list - Join development discussions, propose new ideas and connect with contributors.

Join us on Slack - This is the most immediate way to connect with Apache BookKeeper committers and contributors.

Contributing

We feel that a welcoming open community is important and welcome contributions.

Contributing Code

  1. See our installation guide to get your local environment setup.

  2. Take a look at our open issues: Github Issues.

  3. Review our coding style and follow our pull requests to learn more about our conventions.

  4. Make your changes according to our contributing guide