Presto Cassandra Connector : number of connections

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I am looking into increasing the number of connections Presto makes to ScyllaDB. I am using Presto's Cassandra connector to connect to ScyllaDB. I don't see any property in the documentation that can be used to increase the number of connections. https://prestodb.io/docs/current/connector/cassandra.html

This is my scylladb.properties file

connector.name=cassandra

cassandra.contact-points=scylla1,scylla2,scylla3,scylla4

cassandra.client.read-timeout=3600000ms

cassandra.split-size=1024

cassandra.fetch-size=5000

cassandra.load-policy.token-aware.shuffle-replicas=true

cassandra.load-policy.use-token-aware=true

What is the default number of connections that Presto makes to cassandra/scylladb and how can I set this property? Thanks

edited Nov 20 at 23:23

phact

6,5771224

asked Nov 19 at 21:10

jaspreet kaur bassan

4617

add a comment |

up vote
1
down vote

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This is my scylladb.properties file

connector.name=cassandra

cassandra.contact-points=scylla1,scylla2,scylla3,scylla4

cassandra.client.read-timeout=3600000ms

cassandra.split-size=1024

cassandra.fetch-size=5000

cassandra.load-policy.token-aware.shuffle-replicas=true

cassandra.load-policy.use-token-aware=true

What is the default number of connections that Presto makes to cassandra/scylladb and how can I set this property? Thanks

edited Nov 20 at 23:23

phact

6,5771224

asked Nov 19 at 21:10

jaspreet kaur bassan

4617

add a comment |

up vote
1
down vote

favorite

This is my scylladb.properties file

connector.name=cassandra

cassandra.contact-points=scylla1,scylla2,scylla3,scylla4

cassandra.client.read-timeout=3600000ms

cassandra.split-size=1024

cassandra.fetch-size=5000

cassandra.load-policy.token-aware.shuffle-replicas=true

cassandra.load-policy.use-token-aware=true

What is the default number of connections that Presto makes to cassandra/scylladb and how can I set this property? Thanks

edited Nov 20 at 23:23

phact

6,5771224

asked Nov 19 at 21:10

jaspreet kaur bassan

4617

This is my scylladb.properties file

connector.name=cassandra

cassandra.contact-points=scylla1,scylla2,scylla3,scylla4

cassandra.client.read-timeout=3600000ms

cassandra.split-size=1024

cassandra.fetch-size=5000

cassandra.load-policy.token-aware.shuffle-replicas=true

cassandra.load-policy.use-token-aware=true

What is the default number of connections that Presto makes to cassandra/scylladb and how can I set this property? Thanks

prestodb scylla

edited Nov 20 at 23:23

phact

6,5771224

asked Nov 19 at 21:10

jaspreet kaur bassan

4617

edited Nov 20 at 23:23

phact

6,5771224

asked Nov 19 at 21:10

jaspreet kaur bassan

4617

edited Nov 20 at 23:23

phact

6,5771224

edited Nov 20 at 23:23

phact

6,5771224

edited Nov 20 at 23:23

phact

6,5771224

asked Nov 19 at 21:10

jaspreet kaur bassan

4617

asked Nov 19 at 21:10

jaspreet kaur bassan

4617

asked Nov 19 at 21:10

jaspreet kaur bassan

4617

add a comment |

1 Answer
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0
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Using the same logic as we do for Spark, reducing the cassandra.split-size to a lower number should make you benefit from the following:

Coordination and data fetching is distributed among several coordinators

Higher concurrency of requests, which translates to a higher number of connections between the Presto node/s and Scylla nodes

See how cassandra.split-size=1 behaves and if needed raise to 10, 50, 100

edited 17 hours ago

answered 19 hours ago

TomerSan

68519

add a comment |

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1 Answer
1

active

oldest

votes

1 Answer
1

active

oldest

votes

up vote
0
down vote

Using the same logic as we do for Spark, reducing the cassandra.split-size to a lower number should make you benefit from the following:

Coordination and data fetching is distributed among several coordinators

Higher concurrency of requests, which translates to a higher number of connections between the Presto node/s and Scylla nodes

See how cassandra.split-size=1 behaves and if needed raise to 10, 50, 100

edited 17 hours ago

answered 19 hours ago

TomerSan

68519

add a comment |

up vote
0
down vote

Using the same logic as we do for Spark, reducing the cassandra.split-size to a lower number should make you benefit from the following:

Coordination and data fetching is distributed among several coordinators

Higher concurrency of requests, which translates to a higher number of connections between the Presto node/s and Scylla nodes

See how cassandra.split-size=1 behaves and if needed raise to 10, 50, 100

edited 17 hours ago

answered 19 hours ago

TomerSan

68519

add a comment |

up vote
0
down vote

Using the same logic as we do for Spark, reducing the cassandra.split-size to a lower number should make you benefit from the following:

Coordination and data fetching is distributed among several coordinators

Higher concurrency of requests, which translates to a higher number of connections between the Presto node/s and Scylla nodes

See how cassandra.split-size=1 behaves and if needed raise to 10, 50, 100

edited 17 hours ago

answered 19 hours ago

TomerSan

68519

Using the same logic as we do for Spark, reducing the cassandra.split-size to a lower number should make you benefit from the following:

Coordination and data fetching is distributed among several coordinators

Higher concurrency of requests, which translates to a higher number of connections between the Presto node/s and Scylla nodes

See how cassandra.split-size=1 behaves and if needed raise to 10, 50, 100

edited 17 hours ago

answered 19 hours ago

TomerSan

68519

edited 17 hours ago

answered 19 hours ago

TomerSan

68519

answered 19 hours ago

TomerSan

68519

answered 19 hours ago

TomerSan

68519

add a comment |

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