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https://issues.apache.org/jira/browse/CASSANDRA-9657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Philip Thompson resolved CASSANDRA-9657.
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Resolution: Not A Problem
[~Jan Karlsson], this will be fixed in 3.0, but unfortunately, for now it is
expected behavior.
> Hint table doing unnecessary compaction
> ---------------------------------------
>
> Key: CASSANDRA-9657
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9657
> Project: Cassandra
> Issue Type: Bug
> Environment: 2.1.7
> Reporter: Jan Karlsson
> Priority: Minor
> Fix For: 2.1.x
>
>
> I found some really strange behaviour. During the replay of a node I found
> this in the log:
> {code}INFO [CompactionExecutor:7] CompactionTask.java:271 Compacted 1
> sstables to
> [/var/lib/cassandra/data/system/hints-2666e20573ef38b390fefecf96e8f0c7/system-hints-ka-120,].
> 452,150,727 bytes to 452,150,727 (~100% of original) in 267,588ms =
> 1.611449MB/s. 1 total partitions merged to 1. Partition merge counts were
> {1:1, }{code}
> This happened multiple times until the hint replay was completed and the
> sstables were removed.
> I tried to replicate this by just starting up a cluster in ccm and killing a
> node for a few minutes. I got the same behaviour then.
> {Code}
> INFO [CompactionExecutor:2] CompactionTask.java:270 - Compacted 1 sstables
> to
> [/home/ejankan/.ccm/hint/node3/data/system/hints-2666e20573ef38b390fefecf96e8f0c7/system-hints-ka-2,].
> 65,570 bytes to 65,570 (~100% of original) in 600ms = 0.104221MB/s. 1
> total partitions merged to 1. Partition merge counts were {1:1, }
> {Code}
> It seems weird to me that the file does not decrease in size.
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