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https://issues.apache.org/jira/browse/FLINK-19396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17327630#comment-17327630
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Flink Jira Bot commented on FLINK-19396:
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This major issue is unassigned and itself and all of its Sub-Tasks have not
been updated for 30 days. So, it has been labeled "stale-major". If this ticket
is indeed "major", please either assign yourself or give an update. Afterwards,
please remove the label. In 7 days the issue will be deprioritized.
> Fix properties type cast error
> ------------------------------
>
> Key: FLINK-19396
> URL: https://issues.apache.org/jira/browse/FLINK-19396
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Kafka
> Affects Versions: 1.10.0, 1.10.1, 1.10.2, 1.11.0, 1.11.2
> Reporter: zhangmeng
> Priority: Major
> Labels: pull-request-available, stale-major
>
> Properties extends Hashtable<Object,Object> ，The key and value of the
> Properties class support object objects. If the user's value is a boolean
> type, this code "(String) k, (String) v" will occur an error.
>
>
> 链接kafka失败！！！java.lang.Boolean cannot be cast to java.lang.String
> 48704:java.lang.ClassCastException: java.lang.Boolean cannot be cast to
> java.lang.String
> 48787:at
> org.apache.flink.table.descriptors.Kafka.lambda$properties$0(Kafka.java:99)
> 48867:at java.util.Hashtable.forEach(Hashtable.java:878)
> 48919:at org.apache.flink.table.descriptors.Kafka.properties(Kafka.java:99)
>
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