dlio_benchmark hangs (WIP)

In Release mode, the creation of data succeeds. In Debug mode, we hit an assertion : gkfs_daemon: /home/bsc/bsc025015/ADMIRE/gekkofs/src/daemon/backend/metadata/merge.cpp:219: virtual bool gkfs::metadata::MetadataMergeOperator::FullMergeV2(const rocksdb::MergeOperator::MergeOperationInput&, rocksdb::MergeOperator::MergeOperationOutput*) const: Assertion op.size() < fsize failed.

In Release mode, the training hangs/blocks (still need to get debug)

WIP : Getting debug info