Worked on the Apache Jena repository to address a critical issue in the storage layer, focusing on data integrity and durability for binary data files. Using Java and unit testing, implemented a fix in the BinaryDataFileRandomAccess.truncate() method to correctly reset the write position, preventing writes from extending past the truncated end of file and eliminating zero-gap regions. Developed a regression test to cover both truncate-then-write and truncate-then-read-then-write scenarios, ensuring reliability in TDB2 under aborted transactions. This work strengthened file handling by aligning in-memory state with the underlying file, reducing the risk of NodeTable corruption.