Negative byte values are not printed with the correct unit

[localhost:21000] > select * from tpch.lineitem;
Query: select * from tpch.lineitem
Query submitted at: 2017-04-20 12:04:22 (Coordinator: http://localhost:25000)
Query progress can be monitored at: http://localhost:25000/query_plan?query_id=6048492f67282f78:ef0f2bd400000000
WARNINGS: Memory limit exceeded: Failed to allocate tuple buffer
HDFS_SCAN_NODE (id=0) could not allocate 190.00 KB without exceeding limit.
Error occurred on backend localhost:22000 by fragment 6048492f67282f78:ef0f2bd400000003
Memory left in process limit: 8.24 GB
Memory left in query limit: -7369392.00 B
Query(6048492f67282f78:ef0f2bd400000000): memory limit exceeded. Limit=1.00 MB Total=8.03 MB Peak=8.03 MB
  Fragment 6048492f67282f78:ef0f2bd400000000: Total=8.00 KB Peak=8.00 KB
    EXCHANGE_NODE (id=1): Total=0 Peak=0
    DataStreamRecvr: Total=0 Peak=0
    PLAN_ROOT_SINK: Total=0 Peak=0
    CodeGen: Total=0 Peak=0
  Block Manager: Total=0 Peak=0
  Fragment 6048492f67282f78:ef0f2bd400000003: Total=8.02 MB Peak=8.02 MB
    HDFS_SCAN_NODE (id=0): Total=8.01 MB Peak=8.01 MB
    DataStreamSender (dst_id=1): Total=688.00 B Peak=688.00 B
    CodeGen: Total=0 Peak=0