saba8580 avatar image
saba8580 asked Erick Ramirez edited

nodesync working abnormally after dropping all keyspaces


i dropped my keyspaces and deleted the related folders in my cluster as of then nodesync is working abnormally even though there is absolutely no data in my cluster.

huge amount of commitlogs is getting generated and i get below in system.log.

INFO [NodeSync-1] 2020-09-25 14:47:59,788 - RateLimiter[stableRate=Infinityqps] currently applied for remote replicas: {[host: /xxxxx, incoming rate: 0.000, outgoing rate: 0.000, rate limit: Infinity]
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bettina.swynnerton avatar image bettina.swynnerton ♦♦ commented ·

Hello @saba8580,

what is your DSE version and how big is your cluster?

Can you do a describe keyspaces in cqlsh to let us know what keyspaces are left in the schema?


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saba8580 avatar image saba8580 bettina.swynnerton ♦♦ commented ·

Hello @bettina.swynnerton,

dse version is 6.7.4. cluster has 90 nodes without any data(keyspaces are re-created but no table is in them). around 50mb in each node data_file_directories path).

droppped empty keyspaces now there is only default keyspaces but nodesync is still working .

desc keyspaces;
system_virtual_schema system_schema dse_leases dse_perf
dse_system_local system_auth dse_insights dse_insights_local
dse_security system_views system_distributed dse_system
solr_admin system system_tracesal

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1 Answer

Erick Ramirez avatar image
Erick Ramirez answered Erick Ramirez edited

This isn't abnormal behaviour at all. DSE NodeSync is always running in the background if you have enabled the NodeSync service.

It is continuously checking for data to validate and synchronise. But since there are no tables to validate, it will report both incoming and outgoing rates as zero.

If you don't intend on enabling table validations, you can disable the NodeSync service on each node with:

$ nodetool nodesyncservice disable

You can check the status on a node with:

$ nodetool nodesyncservice status

For more info, see NodeSync service.

If you have any follow up questions, please feel free to log a ticket with DataStax Support so one of our engineers can assist you directly. Cheers!

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