apache/flink · error · RuntimeException

Cannot find the partition value from path for partition

Error message

Cannot find the partition value from path for partition: %s

What it means

Thrown by the PartitionFieldExtractor.forFileSystem lambda when a partition field name declared in the schema is not present in the split's partition spec derived from the file path (or its value equals the default partition value placeholder). The extractor iterates the spec keyed by partition key names; a missing key means the file's partition directory layout does not match the declared partition keys.

Solutions

  1. Address the cause reported by the error message: Cannot find the partition value from path for partition: the reported value
  2. Verify the inputs, configuration values, and classpath/dependency setup related to this operation, then retry.

Example fix

Correct the condition described ("Cannot find the partition value from path for partition: the reported value") and rerun the job or command.
Defensive patterns

Strategy: validation

When it happens

Trigger: Triggered at runtime when the operation fails because: Cannot find the partition value from path for partition: the reported value.

Common situations: Commonly caused by misconfiguration, missing dependencies or files, unsupported types or operations, or invalid user input leading to: Cannot find the partition value from path for partition: the reported value.

AI-assisted analysis of apache/flink@2f3c205e92 (2026-08-14). Data as JSON: /api/errors/1462475d4a1627f7. Report an issue: GitHub.

Appendix: source

Thrown at flink-connectors/flink-connector-files/src/main/java/org/apache/flink/connector/file/table/PartitionFieldExtractor.java:41

import org.apache.flink.table.types.logical.LogicalType;
import org.apache.flink.table.utils.PartitionPathUtils;

import java.io.Serializable;
import java.util.LinkedHashMap;

/** Interface to extract partition field from split. */
@FunctionalInterface
@Internal
public interface PartitionFieldExtractor<T extends FileSourceSplit> extends Serializable {

    Object extract(T split, String fieldName, LogicalType fieldType);

    static PartitionFieldExtractor<FileSourceSplit> forFileSystem(String defaultPartValue) {
        return (split, fieldName, fieldType) -> {
            LinkedHashMap<String, String> partitionSpec =
                    PartitionPathUtils.extractPartitionSpecFromPath(split.path());
            if (!partitionSpec.containsKey(fieldName)) {
                throw new RuntimeException(
                        "Cannot find the partition value from path for partition: " + fieldName);
            }

            String valueStr = partitionSpec.get(fieldName);
            valueStr = valueStr.equals(defaultPartValue) ? null : valueStr;
            return RowPartitionComputer.restorePartValueFromType(valueStr, fieldType);
        };
    }
}

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