Kurt Greaves created CASSANDRA-13622:
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Summary: Better config validation/documentation
Key: CASSANDRA-13622
URL: https://issues.apache.org/jira/browse/CASSANDRA-13622
Project: Cassandra
Issue Type: Bug
Reporter: Kurt Greaves
Priority: Minor
There are a number of properties in the yaml that are "in_mb", however resolve
to bytes when calculated in {{DatabaseDescriptor.java}}, but are stored in
int's. This means that their maximum values are 2047, as any higher when
converted to bytes overflows the int.
Where possible/reasonable we should convert these to be long's, and stored as
long's. If there is no reason for the value to ever be >2047 we should at least
document that as the max value, or better yet make it error if set higher than
that. Noting that although it's bad practice to increase a lot of them to such
high values, there may be cases where it is necessary and in which case we
should handle it appropriately rather than overflowing and surprising the user.
That is, causing it to break but not in the way the user expected it to :)
Following are functions that currently could be at risk of the above:
{code:java|title=DatabaseDescriptor.java}
getThriftFramedTransportSize()
getMaxValueSize()
getCompactionLargePartitionWarningThreshold()
getCommitLogSegmentSize()
getNativeTransportMaxFrameSize()
# These are in KB so max value of 2096128
getBatchSizeWarnThreshold()
getColumnIndexSize()
getColumnIndexCacheSize()
getMaxMutationSize()
{code}
Note we may not actually need to fix all of these, and there may be more. This
was just from a rough scan over the code.
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