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add-ec-vacuum
add_fasthttp_client
add_remote_storage
adding-message-queue-integration-tests
adjust-fsck-cutoff-default
also-delete-parent-directory-if-empty
avoid_releasing_temp_file_on_write
changing-to-zap
collect-public-metrics
copilot/fix-helm-chart-installation
copilot/fix-s3-object-tagging-issue
copilot/make-renew-interval-configurable
copilot/make-renew-interval-configurable-again
copilot/sub-pr-7677
create-table-snapshot-api-design
data_query_pushdown
dependabot/maven/other/java/client/com.google.protobuf-protobuf-java-3.25.5
dependabot/maven/other/java/examples/org.apache.hadoop-hadoop-common-3.4.0
detect-and-plan-ec-tasks
do-not-retry-if-error-is-NotFound
ec-disk-type-support
enhance-erasure-coding
fasthttp
feature/mini-port-detection
feature/modernize-s3-tests
filer1_maintenance_branch
fix-GetObjectLockConfigurationHandler
fix-bucket-name-case-7910
fix-helm-fromtoml-compatibility
fix-mount-http-parallelism
fix-mount-read-throughput-7504
fix-pr-7909
fix-s3-configure-consistency
fix-s3-object-tagging-issue-7589
fix-sts-session-token-7941
fix-versioning-listing-only
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logrus
master
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pr-7412
pr/7984
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dev
helm-3.65.1
v0.69
v0.70beta
v3.33
${ noResults }
1 Commits (1d784094407ec4960bde5f3b00f135f77439d066)
| Author | SHA1 | Message | Date |
|---|---|---|---|
chrislu
|
1cdb2fcf07 |
fix: implement flush-before-getPos() for Parquet compatibility
After analyzing Parquet-Java source code, confirmed that:
1. Parquet calls out.getPos() before writing each page to record offsets
2. These offsets are stored in footer metadata
3. Footer length (4 bytes) + MAGIC (4 bytes) are written after last page
4. When reading, Parquet seeks to recorded offsets
IMPLEMENTATION:
- getPos() now flushes buffer before returning position
- This ensures recorded offsets match actual file positions
- Added comprehensive debug logging
RESULT:
- Offsets are now correctly recorded (verified in logs)
- Last getPos() returns 1252 ✓
- File ends at 1260 (1252 + 8 footer bytes) ✓
- Creates 17 chunks instead of 1 (side effect of many flushes)
- EOF exception STILL PERSISTS ❌
ANALYSIS:
The EOF error persists despite correct offset recording. The issue may be:
1. Too many small chunks (17 chunks for 1260 bytes) causing fragmentation
2. Chunks being assembled incorrectly during read
3. Or a deeper issue in how Parquet footer is structured
The implementation is CORRECT per Parquet's design, but something in
the chunk assembly or read path is still causing the 78-byte EOF error.
Next: Investigate chunk assembly in SeaweedRead or consider atomic writes.
|
2 months ago |