[IMPALA-9954] RpcRecvrTime can be negative

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Impala 4.0.0
• Component/s: Backend
• Epic Color: ghx-label-8
• Assignee: Riza Suminto
• Reporter: Sahil Takiar
• Created: 15/Jul/20 01:18
• Updated: 19/Oct/20 20:58
• Resolved: 19/Oct/20 20:58

Description

Saw this on a recent version of master. Attached the full runtime profile.

        KrpcDataStreamSender (dst_id=2):(Total: 9.863ms, non-child: 3.185ms, % non-child: 32.30%)
          ExecOption: Unpartitioned Sender Codegen Disabled: not needed
           - BytesSent (500.000ms): 0, 0
           - NetworkThroughput: (Avg: 4.34 MB/sec ; Min: 4.34 MB/sec ; Max: 4.34 MB/sec ; Number of samples: 1)
           - RpcNetworkTime: (Avg: 3.562ms ; Min: 679.676us ; Max: 6.445ms ; Number of samples: 2)
           - RpcRecvrTime: (Avg: -151281.000ns ; Min: -231485.000ns ; Max: -71077.000ns ; Number of samples: 2)
           - EosSent: 1 (1)
           - PeakMemoryUsage: 416.00 B (416)
           - RowsSent: 100 (100)
           - RpcFailure: 0 (0)
           - RpcRetry: 0 (0)
           - SerializeBatchTime: 2.880ms
           - TotalBytesSent: 28.67 KB (29355)
           - UncompressedRowBatchSize: 69.29 KB (70950) 

Issue Links

• is related to: IMPALA-10220 Min value of RpcNetworkTime can be negative