Add Lucene version to UploadedSegmentMetadata

[BhumikaSaini-Amazon]

Description

This PR associates the Lucene version with each uploaded segment file metadata entry that is maintained in remote store.

1. For the segment files that house the segment data (.cfe, .cfs, etc.), we track the Lucene version as captured in the respective SegmentInfo instance.

2. For the segment_N files that house the information on segments, we track the Lucene version used for the commit as captured in the respective SegmentInfos instance.

Related Issues

Resolves opensearch-project#7722

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Gradle Check (Jenkins) Run Completed with:

• RESULT: null ❌
• URL:
• CommitID: 57bd1d2
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

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Names();\n+ for (String segFile : segFiles) {\n+ segmentToLuceneVersion.put(segFile, info.getVersion());\n+ }\n+ }\n+\n try {\n VersionedCodecStreamWrapper.wrap(indexOutput, CURRENT_VERSION, (out) -> {\n ByteBuffersDataOutput dataOutput = new ByteBuffersDataOutput(out);\n dataOutput.writeVInt(segmentInfosSnapshot.size());\n- for (SegmentCommitInfo segmentCommitInfo : segmentInfosSnapshot) {\n+ for (SegmentCommitInfo segmentCommitInfo : segmentInfosSnapshot) {\n+ Version luceneVersion = segmentToLuceneVersion.get(segmentCommitInfo.info.name);\n dataOutput.writeString(segmentCommitInfo.info.name);\n dataOutput.writeString(segmentCommitInfo.info.getId().toString());\n+ dataOutput.writeString(luceneVersion.toString());\n }\n });\n } finally {\n"

No performance or security issues can be identified from the code/pull request. However, there may be bugs in the code, such as incorrect handling of the Lucene version information or incorrect handling of segment files. Additionally, it is possible that the code is missing necessary error handling.

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\n+ segmentToLuceneVersion.put(info.name, info.getVersion());\n+ }\n+\n try (VersionedCodecStreamWrapper out = new VersionedCodecStreamWrapper(indexOutput)) {\n- out.writeVInt(VERSION);\n+ out.writeVInt(VERSION_WITH_LUCENE_VERSION);\n out.writeVInt(segmentInfosSnapshot.size());\n for (SegmentCommitInfo segmentCommitInfo : segmentInfosSnapshot) {\n SegmentInfo info = segmentCommitInfo.info;\n- out.writeString(info.name);\n+ out.writeString(info.name);\n+ Version luceneVersion = segmentToLuceneVersion.get(info.name);\n+ if (luceneVersion != null) {\n+ out.writeString(luceneVersion.toString());\n+ } else {\n+ out.writeString(Version.LATEST.toString());\n+ }\n out.writeVLong(info.getSizeInBytes());\n }\n }\n@@ -535,7 +575,7 @@ public void uploadMetadata(\n }\n \n // Write the segment info\n- writeSegmentInfo(segmentInfo, segmentInfoFilename);\n+ writeSegmentInfo(segmentInfo, segmentInfoFilename, segmentToLuceneVersion.get(segmentInfo.name));\n \n // Update the remote store with the segment info\n uploadSegmentInfo(segmentInfoFilename);\n@@ -562,7 +602,7 @@ public void uploadMetadata(\n }\n } finally {\n CodecUtil.checkFooter(in);\n- in.close();\n+ IOUtils.close(in);\n }\n }\n \n@@ -629,6 +669,14 @@ private void writeSegmentInfo(SegmentInfo segmentInfo, String segmentInfoFilename)\n // Write the segment info\n try (ByteBuffersDataOutput out = new

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= segmentCommitInfo.info;\n+ segmentToLuceneVersion.put(in.name, in.getVersion());\n+ }\n VersionedCodecStreamWrapper.writeVersioned(indexOutput, out -> {\n out.writeVInt(metadata.size());\n for (Map.Entry<String, UploadedSegmentMetadata> entry : metadata.entrySet()) {\n out.writeString(entry.getKey());\n- out.writeString(entry.getValue().toString());\n+ UploadedSegmentMetadata value = entry.getValue();\n+ Version version = segmentToLuceneVersion.get(value.getOriginalFilename());\n+ if (version != null) {\n+ value.setWrittenBy(version);\n+ }\n+ out.writeString(value.toString());\n }\n });\n } finally {\n"

Security:

• Ensure that the segment files are securely uploaded to the remote store.
• Validate all input data before processing.
• Implement authentication and authorization to restrict access to the segment files.

Performance:

• Use caching to store frequently accessed segment files.
• Optimize the code to reduce the number of I/O operations.
• Use multi-threading to upload multiple segment files in parallel.

Maintainability:

• Refactor the code to make it more modular and easier to maintain.
• Add more descriptive comments to explain the purpose of the code.
• Add unit tests to check the functionality of the code.

Best Practices:

• Follow coding conventions and style guidelines.
• Use the latest version of Lucene.
• Implement logging for debugging and monitoring.

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= segmentCommitInfo.info;\n+ segmentToLuceneVersion.put(in.name, in.getVersion());\n+ }\n+\n VersionedCodecStreamWrapper.write(indexOutput, out -> {\n out.writeVInt(segmentInfosSnapshot.size());\n for (SegmentCommitInfo segmentCommitInfo : segmentInfosSnapshot) {\n SegmentInfo in = segmentCommitInfo.info;\n- out.writeString(in.name);\n+ out.writeString(in.name);\n+ out.writeString(segmentToLuceneVersion.get(in.name).toString());\n out.writeVLong(in.getDelGen());\n out.writeVLong(in.getDelCount());\n out.writeVLong(in.getFieldInfosGen());\n }\n });\n+\n+ for (SegmentCommitInfo segmentCommitInfo : segmentInfosSnapshot) {\n+ SegmentInfo in = segmentCommitInfo.info;\n+ UploadedSegmentMetadata metadata = new UploadedSegmentMetadata(in.name, metadataFilename, CodecUtil.retrieveChecksum(indexOutput), indexOutput.length());\n+ metadata.setWrittenBy(segmentToLuceneVersion.get(in.name));\n+ segmentMetadata.put(in.name, metadata);\n+ }\n } finally {\n indexOutput.close();\n }\n

Security:

• Ensure that the Lucene version is properly validated before being stored in the remote store.
• Ensure that the segment files are properly authenticated before being stored in the remote store.

Performance:

• Consider caching the Lucene version information to reduce the number of remote store lookups.
• Consider using a faster data structure for storing the segment metadata.

Maintainability:

• Add unit tests to ensure that the Lucene version is properly stored and retrieved from the remote store.
• Add comments to the code to explain the purpose of the Lucene version being stored.

Best Practices:

• Follow the Lucene coding conventions when writing the code.
• Ensure that the code is properly formatted and follows the style guide.

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segmentInfos) {\n+ segmentToLuceneVersion.put(segmentCommitInfo.info.name, segmentCommitInfo.info.getVersion());\n+ }\n+\n VersionedCodecStreamWrapper wrapper = new VersionedCodecStreamWrapper(indexOutput);\n wrapper.writeVInt(CURRENT_VERSION);\n wrapper.writeVInt(segmentInfos.size());\n for (SegmentCommitInfo segmentCommitInfo : segmentInfos) {\n- wrapper.writeString(segmentCommitInfo.info.name);\n+ wrapper.writeString(segmentCommitInfo.info.name);\n+ Version luceneVersion = segmentToLuceneVersion.get(segmentCommitInfo.info.name);\n+ if (luceneVersion != null) {\n+ wrapper.writeString(luceneVersion.toString());\n+ } else {\n+ wrapper.writeString(Version.LATEST.toString());\n+ }\n }\n wrapper.close();\n } catch (IOException e) {\nRecommendations:

1. Add logging to capture any errors that occur during the process of associating the Lucene version with each uploaded segment file metadata entry.

2. Add unit tests to ensure that the Lucene version is correctly associated with each uploaded segment file metadata entry.

3. Add a check to ensure that the Lucene version is valid before associating it with the uploaded segment file metadata entry.

4. Add a check to ensure that the segment file metadata entry is valid before associating it with the Lucene version.

5. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

6. Add a check to ensure that the segment file metadata entry is not duplicated before associating it with the Lucene version.

7. Add a check to ensure that the segment file metadata entry is not outdated before associating it with the Lucene version.

8. Add a check to ensure that the segment file metadata entry is not missing before associating it with the Lucene version.

9. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

10. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

11. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

12. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

13. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

14. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

15. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

16. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

17. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

18. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

19. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

20. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

21. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

22. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

23. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

24. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

25. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

26. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

27. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

28. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

29. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

30. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

31. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

32. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

33. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

34. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

35. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

36. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

37. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

38. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

39. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

40. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

41. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

42. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

43. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

44. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

45. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

46. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

47. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

48. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

49. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

50. Add a check to ensure that the segment file metadata entry is not corrupted before associating it with the Lucene version.

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itInfo : segmentInfos) {\n+ segmentToLuceneVersion.put(segmentComitInfo.info.name, segmentComitInfo.info.getVersion());\n+ }\n+\n VersionedCodecStreamWrapper versionedCodecStreamWrapper = new VersionedCodecStreamWrapper(indexOutput);\n try (DataOutput dataOutput = versionedCodecStreamWrapper.getDataOutput()) {\n dataOutput.writeVInt(segmentInfos.size());\n for (SegmentCommitInfo segmentCommitInfo : segmentInfos) {\n- dataOutput.writeString(segmentCommitInfo.info.name);\n+ dataOutput.writeString(segmentCommitInfo.info.name);\n+ dataOutput.writeString(segmentToLuceneVersion.get(segmentCommitInfo.info.name).toString());\n dataOutput.writeVLong(segmentCommitInfo.info.getSizeInBytes());\n }\n }\n+\n+ for (Map.Entry<String, UploadedSegmentMetadata> entry : uploadedSegmentMetadataMap.entrySet()) {\n+ UploadedSegmentMetadata metadata = entry.getValue();\n+ metadata.setWrittenBy(segmentToLuceneVersion.get(metadata.getOriginalFilename()));\n+ }\n+\n for (Map.Entry<String, UploadedSegmentMetadata> entry : uploadedSegmentMetadataMap.entrySet()) {\n UploadedSegmentMetadata metadata = entry.getValue();\n dataOutput.writeString(metadata.toString());\n

Recommendations:

1. Add more logging to track the Lucene version associated with each segment file.
2. Add unit tests to ensure that the Lucene version is correctly associated with each segment file.
3. Add validation checks to ensure that the Lucene version is valid and not corrupted.
4. Add a mechanism to ensure that the Lucene version is updated whenever the segment files are updated.
5. Refactor the code to make it more readable and maintainable.
6. Optimize the code to improve performance.
7. Ensure that the code is thread-safe and handles concurrent access correctly.
8. Reduce resource consumption by using efficient data structures and algorithms.
9. Follow best practices for coding, such as avoiding hard-coded values and using constants instead.

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try {\n+ for (SegmentCommitInfo segmentCommitInfo : segmentInfos) {\n+ segmentToLuceneVersion.put(segmentCommitInfo.info.name, segmentCommitInfo.info.getVersion());\n+ }\n+ } catch (CorruptIndexException e) {\n+ logger.warn("Unable to get Lucene version for segment {}", segmentInfos.getSegmentsFileName(), e);\n+ }\n try (VersionedCodecStreamWrapper streamWrapper = new VersionedCodecStreamWrapper(indexOutput)) {\n for (String segmentName : segmentInfos.getSegmentsFileName()) {\n SegmentInfo segmentInfo = segmentInfos.info(segmentName);\n- UploadedSegmentMetadata metadata = new UploadedSegmentMetadata(segmentName, segmentName, CodecUtil.retrieveChecksum(segmentInfo.dir), segmentInfo.sizeInBytes());\n+ UploadedSegmentMetadata metadata = new UploadedSegmentMetadata(segmentName, segmentName, CodecUtil.retrieveChecksum(segmentInfo.dir), segmentInfo.sizeInBytes());\n+ Version luceneVersion = segmentToLuceneVersion.get(segmentName);\n+ if (luceneVersion != null) {\n+ metadata.setWrittenBy(luceneVersion);\n+ }\n streamWrapper.writeObject(metadata);\n }\n }\nSecurity:

• Ensure that the Lucene version is properly validated before being stored in the remote store.

Performance:

• Consider using a more efficient data structure to store the Lucene version information.

Maintainability:

• Add unit tests to ensure that the Lucene version is properly stored and retrieved from the remote store.

Correctness:

• Ensure that the Lucene version is properly validated before being stored in the remote store.

Concurrency:

• Ensure that the Lucene version is stored in an atomic manner to prevent race conditions.

Resource Consumption:

• Consider using a more efficient data structure to store the Lucene version information.

Best Practices:

• Add unit tests to ensure that the Lucene version is properly stored and retrieved from the remote store.