Skip to content

AVRO-4170: [Java] Improve sync marker error message in DataFileStream #3446

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
opwvhk merged 1 commit into from
Sep 11, 2025
+8 −2
Merged

AVRO-4170: [Java] Improve sync marker error message in DataFileStream #3446

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 4 additions & 1 deletion lang/java/avro/src/main/java/org/apache/avro/file/DataFileStream.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -330,7 +330,10 @@ DataBlock nextRawBlock(DataBlock reuse) throws IOException {
vin.readFixed(syncBuffer);
availableBlock = false;
if (!Arrays.equals(syncBuffer, header.sync))
throw new IOException("Invalid sync!");
throw new IOException("Invalid sync marker! The sync marker in the data block doesn't match the "
+ "file header's sync marker. This likely indicates data corruption, truncated file, "
+ "or incorrectly concatenated Avro files. Verify file integrity and ensure proper "
+ "file transmission or creation.");
return reuse;
}

Expand Down
5 changes: 4 additions & 1 deletion lang/java/avro/src/test/java/org/apache/avro/TestDataFileCorruption.java
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -87,7 +87,10 @@ void corruptedFile() throws IOException {
assertEquals("fig", r.next().toString());
assertFalse(r.hasNext());
} catch (AvroRuntimeException e) {
assertEquals("Invalid sync!", e.getCause().getMessage());
assertEquals("Invalid sync marker! The sync marker in the data block doesn't match the "
+ "file header's sync marker. This likely indicates data corruption, truncated file, "
+ "or incorrectly concatenated Avro files. Verify file integrity and ensure proper "
+ "file transmission or creation.", e.getCause().getMessage());
}

}
Expand Down