Node failures during Hadoop ingestion create incomplete HDFS blocks

Intermittent node failures during Hadoop ingestion pipeline execution result in incomplete HDFS blocks being written, causing data loss or corruption.

Monitor HDFS block replication status and under-replicated blocks. Implement retry logic for failed write operations. Run HDFS fsck to identify and repair corrupt or missing blocks. Increase HDFS replication factor for critical datasets. Configure pipeline to validate block completeness post-write. Check NameNode and DataNode logs for hardware issues.