apache/iceberg · warning

[For table {} with {}[{}] at {}]: Exception processing {}

Error message

[For table {} with {}[{}] at {}]: Exception processing {}

What it means

DataFileRewriteCommitter.processElement catches Exceptions while offering an executed rewrite group to the commit service and logs them with the maintenance message prefix (table, task, index, timestamp). The failed group is not committed; processing of subsequent records continues.

Source

Thrown at flink/v2.3/flink/src/main/java/org/apache/iceberg/flink/maintenance/operator/DataFileRewriteCommitter.java:118

  @Override
  public void processElement(StreamRecord<DataFileRewriteRunner.ExecutedGroup> streamRecord) {
    DataFileRewriteRunner.ExecutedGroup executedGroup = streamRecord.getValue();
    try {
      if (commitService == null) {
        // Refresh the table to get the latest snapshot for the committer
        table.refresh();

        FlinkRewriteDataFilesCommitManager commitManager =
            new FlinkRewriteDataFilesCommitManager(
                table, executedGroup.snapshotId(), streamRecord.getTimestamp(), branch);
        this.commitService = commitManager.service(executedGroup.groupsPerCommit());
        commitService.start();
      }

      commitService.offer(executedGroup.group());
    } catch (Exception e) {
      LOG.warn(
          DataFileRewritePlanner.MESSAGE_PREFIX + "Exception processing {}",
          tableName,
          taskName,
          taskIndex,
          streamRecord.getTimestamp(),
          executedGroup,
          e);
      output.collect(TaskResultAggregator.ERROR_STREAM, new StreamRecord<>(e));
      errorCounter.inc();
    }
  }

  @Override
  public void processWatermark(Watermark mark) throws Exception {
    try {
      if (commitService != null) {
        commitService.close();
      }

View on GitHub (pinned to 86d9c8fc54)

Solutions

1. Read the attached exception and the prefixed table/task identifiers to locate the failing rewrite task
2. Re-run table maintenance for the affected table once the cause is fixed
3. Check for concurrent competing compaction jobs or catalog commit conflicts
4. Validate the maintenance job configuration (groupsPerCommit, table loading options)

// ensure the maintenance table loads before enabling rewrite job
 tableLoader.open().refresh();

try {
  commitService.offer(group);
} catch (Exception e) {
  LOG.warn(MESSAGE_PREFIX + "Exception processing {}", table, task, idx, ts, e);
  // re-run maintenance later
}

When it happens

Trigger: commitService.offer(executedGroup.group()) or commitManager.service(...) setup throws — e.g. table loading failure, invalid rewrite group, or internal commit-service error when the RewriteDataFiles commit output arrives at the committer operator.

Common situations: Table schema/spec changed between planning and commit; concurrent commits conflicting; misconfigured maintenance job producing groups the commit manager cannot handle.

Related errors

• [For table {} with {}[{}] at {}]: Exception closing commit s
• [For table {} with {}[{}] at {}]: Exception closing commit s
• Skipping commit for table {} task {}: a DV writer reported a
• Skipping commit for table {} task {}: a DV writer reported a
• [For table {} with {}[{}] at {}]: Exception processing {}

AI-assisted analysis of apache/iceberg@86d9c8fc54 (2026-09-12). Data as JSON: /api/errors/c82ed271a19ec178. Report an issue: GitHub.