Influxdb内存泄漏

• 项目类型：Windows Service
• .net Version:  .net Framework 4.8
• 开发语言： C#
• influxDB API:  InfluxDB.Client v4.15.0 InfluxDB.Client.Core v4.15.0

重现代码：

创建一个Timer周期性地调用写入函数：

_timerWriteDB = new Timer((o) => WriteData(), null, timeMinute * 1000, 60 * 1000); // per 1 minutes

WriteData的实现：

private async void WriteData()
        {
            try
            {
                lock (syncTable)
                {
                    string now = DateTime.Now.ToString("HH:mm:ss");
                    foreach (DataRow r in deviceWorkHour.Rows)
                    {
                        if (string.Compare(now, r["startTime"].ToString()) >= 0
                            && string.Compare(now, r["endtime"].ToString()) < 0)
                        {
                            var point = PointData.Measurement(Measurement)
                            .Tag("plantcode", r["plantcode"].ToString())
                            .Tag("workshopCode", r["workshopCode"].ToString())
                            .Tag("linecode", r["linecode"].ToString())
                            .Tag("groupcode", r["groupcode"].ToString())
                            .Tag("WorkTimeType", r["WorkTimeType"].ToString())
                            .Field("schdTime", 60); //每分钟写一次，即每次60s

                            var writeApi = _influxDBClient.GetWriteApi();
                            writeApi.WritePoint(point, bucket, org);
                            _logger.Info($"log schdTime for {r["groupcode"]}");
                        }
                    }
                }

            }
            catch (Exception ex)
            {
                _logger.Error(ex.ToString());
            }
        }

修改办法，将异步方法 GetWriteApi 修改为同步方法 GetWriteApiAsync

        private void WriteData()
        {
            try
            {
                lock (syncTable)
                {
                    string now = DateTime.Now.ToString("HH:mm:ss");
                    List<PointData> points = new List<PointData>();
                    foreach (DataRow r in deviceWorkHour.Rows)
                    {
                        if (string.Compare(now, r["startTime"].ToString()) >= 0
                            && string.Compare(now, r["endtime"].ToString()) < 0)
                        {
                            var point = PointData.Measurement(Measurement)
                            .Tag("plantcode", r["plantcode"].ToString())
                            .Tag("workshopCode", r["workshopCode"].ToString())
                            .Tag("linecode", r["linecode"].ToString())
                            .Tag("groupcode", r["groupcode"].ToString())
                            .Tag("WorkTimeType", r["WorkTimeType"].ToString())
                            .Field("schdTime", 60); //每分钟写一次，即每次60s
                            points.Add(point);
                        }
                    }
                    var writeApi = _influxDBClient.GetWriteApiAsync();
                    writeApi.WritePointsAsync(points, bucket, org);
                }

            }
            catch (Exception ex)
            {
                _logger.Error(ex.ToString());
            }
        }

总结，这应该是一个bug。