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From Surbhi Gupta <>
Subject How to read content of hints file and apply them manually?
Date Mon, 27 Jan 2020 22:16:41 GMT

We are on Open source 3.11 .
We have a issue in one of the cluster where lots of hints gets piled up and
they don't get applied within hinted handoff period ( 3 hour in our case) .
And load and CPU of the server goes very high.
We see lot of messages   in system.log and debug.log . Our read repair
chance and dc_local_repair chance is 0.1 . Any pointers are welcome .

ERROR [ReadRepairStage:83] 2020-01-27 13:08:43,695
- Exception in thread Thread[ReadRepairStage:83,5,main]

org.apache.cassandra.exceptions.ReadTimeoutException: Operation timed out -
received only 0 responses.

DEBUG [ReadRepairStage:111] 2020-01-27 13:10:06,663 -
Digest mismatch:

org.apache.cassandra.service.DigestMismatchException: Mismatch for key
DecoratedKey(4759131696153881383, 9a21276d0af64de28eeeed5d3023b69e)

474a0 vs fcba30f022ef25f456914c341022963d)

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