prestodb/presto · error · OrcCorruptionException

Unexpected stripe at offset %s

Error message

Unexpected stripe at offset %s

What it means

Write-validation error: a stripe exists in the file at an offset for which the writer recorded no statistics entry. The expected-statistics map has no entry at that stripeOffset, meaning the on-disk stripe layout diverges from what the writer tracked — corruption or writer bug.

Source

Thrown at presto-orc/src/main/java/com/facebook/presto/orc/OrcWriteValidation.java:268

        }

        if (actualStripeStatistics.size() != stripeStatistics.size()) {
            throw new OrcCorruptionException(orcDataSourceId, "Write validation failed: unexpected number of columns in stripe statistics");
        }

        for (int stripeIndex = 0; stripeIndex < actualStripes.size(); stripeIndex++) {
            long stripeOffset = actualStripes.get(stripeIndex).getOffset();
            StripeStatistics actual = actualStripeStatistics.get(stripeIndex);
            validateStripeStatistics(orcDataSourceId, stripeOffset, actual.getColumnStatistics());
        }
    }

    public void validateStripeStatistics(OrcDataSourceId orcDataSourceId, long stripeOffset, List<ColumnStatistics> actual)
            throws OrcCorruptionException
    {
        StripeStatistics expected = stripeStatistics.get(stripeOffset);
        if (expected == null) {
            throw new OrcCorruptionException(orcDataSourceId, "Unexpected stripe at offset %s", stripeOffset);
        }
        validateColumnStatisticsEquivalent(orcDataSourceId, "Stripe at " + stripeOffset, actual, expected.getColumnStatistics());
    }

    public void validateRowGroupStatistics(OrcDataSourceId orcDataSourceId, long stripeOffset, Map<StreamId, List<RowGroupIndex>> actualRowGroupStatistics)
            throws OrcCorruptionException
    {
        requireNonNull(actualRowGroupStatistics, "actualRowGroupStatistics is null");
        List<RowGroupStatistics> expectedRowGroupStatistics = rowGroupStatistics.get(stripeOffset);
        if (expectedRowGroupStatistics == null) {
            throw new OrcCorruptionException(orcDataSourceId, "Missing row group column statistics for stripe at offset %s", stripeOffset);
        }

        int rowGroupCount = expectedRowGroupStatistics.size();
        for (Entry<StreamId, List<RowGroupIndex>> entry : actualRowGroupStatistics.entrySet()) {
            if (entry.getValue().size() != rowGroupCount) {
                throw new OrcCorruptionException(orcDataSourceId, "Unexpected row group count stripe in at offset %s", stripeOffset);
            }

View on GitHub (pinned to 55bb57d202)

Solutions

1. Rewrite the data set and re-validate
2. Capture the writer validation report and report as a Presto ORC bug
3. Check the filesystem/hardware for silent corruption

When it happens

Trigger: Thrown at presto-orc/src/main/java/com/facebook/presto/orc/OrcWriteValidation.java:268 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of prestodb/presto@55bb57d202 (2026-09-04). Data as JSON: /api/errors/cbba5ac801892e9a. Report an issue: GitHub.