[RELEASE] ScyllaDB Monitoring Stack 4.4.0

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Amnon Heiman

<amnon@scylladb.com>
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May 22, 2023, 5:17:25 AM5/22/23
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Kiran bhosale

<bhosalekiran259@gmail.com>
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Mar 17, 2024, 2:59:12 PMMar 17
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Hi team,

I am getting below  error in scylldb cluster, please suggest the solution. 

[shard 4] storage_proxy - Failed to apply mutation from 20.105.3.22#4: seastar::named_semaphore_timed_out (Semaphore timed out: smp_service_group#2 3->4 semaphore)


On Monday, May 22, 2023 at 2:47:25 PM UTC+5:30 Amnon Heiman wrote:

Avi Kivity

<avi@scylladb.com>
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Mar 17, 2024, 3:02:48 PMMar 17
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This is often caused by a hot partition and not using the shard-aware driver.

Checkout the `nodetool toppartitions` command.
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Kiran bhosale

<bhosalekiran259@gmail.com>
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Mar 18, 2024, 11:34:26 AMMar 18
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Hi,
Currently we are using ScyllaDB version 4.4.7 and read the data using Spark Cassandra Connector 2.5.2 as we use Spark 2.4.7 . We don't know if the Connector supports Shard Awareness as there is no mention of it on the github page of the Connector. Could you please help in guiding us how to enable shard awareness or if there is any driver /connector specific to ScyllaDB as we couldn't find any specific Spark connector for ScyllaDB.

Thanks & Regards

Avi Kivity

<avi@scylladb.com>
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Mar 18, 2024, 12:26:36 PMMar 18
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ScyllaDB 4.4.7 is past end-of-life, please upgrade to a supported version.

I don't know enough about the spark connector, you can try asking on the forum.
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