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https://issues.apache.org/jira/browse/CASSGO-105?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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João Reis updated CASSGO-105:
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Reviewers: João Reis, João Reis (was: João Reis)
João Reis, João Reis (was: João Reis)
Status: Review In Progress (was: Patch Available)
> Nil pointer dereference in compileMetadata when custom aggregate has no final
> func defined
> ------------------------------------------------------------------------------------------
>
> Key: CASSGO-105
> URL: https://issues.apache.org/jira/browse/CASSGO-105
> Project: Apache Cassandra Go driver
> Issue Type: Bug
> Components: Core
> Reporter: Bohdan Siryk
> Priority: Normal
> Fix For: 2.1.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> A nil pointer dereference occurs when a custom aggregate is defined without a
> FINALFUNC. Cassandra states that the final func is optional, so Gocql should
> correctly handle such a case.
> Discovered during the implementation of CASSGO-101.
> The root cause is [this piece of
> code|https://github.com/apache/cassandra-gocql-driver/blob/f1e31a58f7e0c25e58e2e2a0a0c6de358e643e8b/metadata.go#L362],
> which tries to get function metadata from the Functions map by finalFunc
> name. As there is no final function for the created aggregate,
> _AggregateMetadata.finalFunc_ is an empty string. Trying to get the function
> metadata from _KeyspaceMetadata.Functions_ map by that empty string value
> result in a return of a nil value, which is being dereferenced after.
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