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Posted to reviews@iotdb.apache.org by GitBox <gi...@apache.org> on 2021/09/16 01:42:25 UTC
[GitHub] [iotdb] HTHou opened a new pull request #3975: [IOTDB-1131] Improve wal by using differential logging
HTHou opened a new pull request #3975:
URL: https://github.com/apache/iotdb/pull/3975
## Description
Auther: jt2594838
(Resubmit the PR #1869)
WALs may contain duplicated fields like deviceIds, measurementsId and data types. This PR aims to eliminate them to improve WAL performance when using small batchSize and without damaging the performance when using large batchSize.
Design:
[Differential Logging.docx](https://github.com/apache/iotdb/files/5442493/Differential.Logging.docx)
Evaluation:
[differentiation_logging.xlsx](https://github.com/apache/iotdb/files/5442494/differentiation_logging.xlsx)
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<hr>
This PR has:
- [ ] been self-reviewed.
- [ ] concurrent read
- [ ] concurrent write
- [ ] concurrent read and write
- [ ] added documentation for new or modified features or behaviors.
- [ ] added Javadocs for most classes and all non-trivial methods.
- [ ] added or updated version, __license__, or notice information
- [ ] added comments explaining the "why" and the intent of the code wherever would not be obvious
for an unfamiliar reader.
- [ ] added unit tests or modified existing tests to cover new code paths, ensuring the threshold
for code coverage.
- [ ] added integration tests.
- [ ] been tested in a test IoTDB cluster.
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<hr>
##### Key changed/added classes (or packages if there are too many classes) in this PR
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[GitHub] [iotdb] HTHou closed pull request #3975: [IOTDB-1131] Improve wal by using differential logging
Posted by GitBox <gi...@apache.org>.
HTHou closed pull request #3975:
URL: https://github.com/apache/iotdb/pull/3975
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[GitHub] [iotdb] coveralls commented on pull request #3975: [IOTDB-1131] Improve wal by using differential logging
Posted by GitBox <gi...@apache.org>.
coveralls commented on pull request #3975:
URL: https://github.com/apache/iotdb/pull/3975#issuecomment-920528186
[](https://coveralls.io/builds/42910912)
Coverage remained the same at 67.479% when pulling **faa869958811219dfffa3675a6de2ae1dca10e1e on improve_wal** into **e5d86c9d1d5de1934c77d2ea4f97f8cd6d669bb8 on master**.
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[GitHub] [iotdb] sonarcloud[bot] commented on pull request #3975: [IOTDB-1131] Improve wal by using differential logging
Posted by GitBox <gi...@apache.org>.
sonarcloud[bot] commented on pull request #3975:
URL: https://github.com/apache/iotdb/pull/3975#issuecomment-920527804
SonarCloud Quality Gate failed. 
[](https://sonarcloud.io/project/issues?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=BUG) [](https://sonarcloud.io/project/issues?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=BUG) [1 Bug](https://sonarcloud.io/project/issues?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=BUG)
[](https://sonarcloud.io/project/issues?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=VULNERABILITY) [](https://sonarcloud.io/project/issues?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=VULNERABILITY) [0 Vulnerabilities](https://sonarcloud.io/project/issues?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=VULNERABILITY)
[](https://sonarcloud.io/project/security_hotspots?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=SECURITY_HOTSPOT) [](https://sonarcloud.io/project/security_hotspots?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=SECURITY_HOTSPOT) [0 Security Hotspots](https://sonarcloud.io/project/security_hotspots?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=SECURITY_HOTSPOT)
[](https://sonarcloud.io/project/issues?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=CODE_SMELL) [](https://sonarcloud.io/project/issues?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=CODE_SMELL) [33 Code Smells](https://sonarcloud.io/project/issues?id=apache_incubator-iotdb&pullRequest=3975&resolved=false&types=CODE_SMELL)
[](https://sonarcloud.io/component_measures?id=apache_incubator-iotdb&pullRequest=3975&metric=new_coverage&view=list) [46.3% Coverage](https://sonarcloud.io/component_measures?id=apache_incubator-iotdb&pullRequest=3975&metric=new_coverage&view=list)
[](https://sonarcloud.io/component_measures?id=apache_incubator-iotdb&pullRequest=3975&metric=new_duplicated_lines_density&view=list) [2.8% Duplication](https://sonarcloud.io/component_measures?id=apache_incubator-iotdb&pullRequest=3975&metric=new_duplicated_lines_density&view=list)
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