Tree:
9b94f970c7
add-admin-and-worker-to-helm-charts
add-ec-vacuum
add_fasthttp_client
add_remote_storage
adding-message-queue-integration-tests
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
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/async-empty-folder-cleanup
feature/tus-protocol
filer1_maintenance_branch
fix-GetObjectLockConfigurationHandler
fix-mount-http-parallelism
fix-s3-object-tagging-issue-7589
fix-versioning-listing-only
ftp
gh-pages
improve-fuse-mount
improve-fuse-mount2
logrus
master
message_send
mount2
mq-subscribe
mq2
original_weed_mount
pr-7412
random_access_file
refactor-needle-read-operations
refactor-volume-write
remote_overlay
revert-5134-patch-1
revert-5819-patch-1
revert-6434-bugfix-missing-s3-audit
s3-select
sub
tcp_read
test-reverting-lock-table
test_udp
testing
testing-sdx-generation
tikv
track-mount-e2e
upgrade-versions-to-4.00
volume_buffered_writes
worker-execute-ec-tasks
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dev
helm-3.65.1
v0.69
v0.70beta
v3.33
${ noResults }
1 Commits (9b94f970c79f8ec4b16d8244f04f45efc29ccdac)
| Author | SHA1 | Message | Date |
|---|---|---|---|
chrislu
|
852ca41928 |
docs: BREAKTHROUGH - found the bug in Spark local reproduction!
KEY FINDINGS from local Spark test: 1. flushedPosition=0 THE ENTIRE TIME during writes! - All data stays in buffer until close - getPos() returns bufferPosition (0 + bufferPos) 2. Critical sequence discovered: - Last getPos(): bufferPosition=1252 (Parquet records this) - close START: buffer.position()=1260 (8 MORE bytes written!) - File size: 1260 bytes 3. The Gap: - Parquet calls getPos() and gets 1252 - Parquet writes 8 MORE bytes (footer metadata) - File ends at 1260 - But Parquet footer has stale positions from when getPos() was 1252 4. Why unit tests pass but Spark fails: - Unit tests: write, getPos(), close (no more writes) - Spark: write chunks, getPos(), write footer, close The Parquet footer metadata is INCORRECT because Parquet writes additional data AFTER the last getPos() call but BEFORE close. Next: Download actual Parquet file and examine footer with parquet-tools. |
1 week ago |