You can configure all of the Metrics Managers (MMs) in a topology using the parameters below.
You can configure how the MM collects and transmits data in one (but only one) of two ways: time based or size based. If you choose time based, you can specify the maximum batch time (in milliseconds) for reading from and writing to the MM's socket; if you choose size based, you can specify maximum batch sizes (in bytes) instead.
| Config | Meaning | Default |
|---|---|---|
heron.metricsmgr.network.read.batch.time.ms | The maximum batch time in milliseconds for the MM to read from the socket | 16 |
heron.metricsmgr.network.write.batch.time.ms | The maximum batch time in milliseconds for the MM to write to the socket | 16 |
| Config | Meaning | Default |
|---|---|---|
heron.metricsmgr.network.read.batch.size.bytes | Size based, the maximum batch size in bytes to read from socket | 32768 |
heron.metricsmgr.network.write.batch.size.bytes | Size based, the maximum batch size in bytes to write to socket | 32768 |
Each MM instance has a socket buffer for reading and writing metrics data. You can set maximum buffer sizes for both send and receive buffers.
| Config | Meaning | Default |
|---|---|---|
heron.metricsmgr.network.options.socket.send.buffer.size.bytes | The maximum socket's send buffer size in bytes | 6553600 |
heron.metricsmgr.network.options.socket.received.buffer.size.bytes | The maximum socket‘s received buffer size in bytes of the metrics manager’s network options | 8738000 |