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KAFKA-18171: Unexpected Change in bootstrap.servers Behavior After Upgrade to 3.8.0 #18706

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KAFKA-18171: Unexpected Change in bootstrap.servers Behavior After Upgrade to 3.8.0 #18706

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4 changes: 2 additions & 2 deletions clients/src/main/java/org/apache/kafka/common/config/ConfigDef.java
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Original file line number Diff line number Diff line change
Expand Up @@ -80,7 +80,7 @@
*/
public class ConfigDef {

private static final Pattern COMMA_WITH_WHITESPACE = Pattern.compile("\\s*,\\s*");
private static final Pattern COMMA_WITH_WHITESPACE_OR_ONLY_WHITESPACE = Pattern.compile("\\s*,\\s*|\\s+");

/**
* A unique Java object which represents the lack of a default value.
Expand Down Expand Up @@ -759,7 +759,7 @@ else if (value instanceof String)
if (trimmed.isEmpty())
return Collections.emptyList();
else
return Arrays.asList(COMMA_WITH_WHITESPACE.split(trimmed, -1));
return Arrays.asList(COMMA_WITH_WHITESPACE_OR_ONLY_WHITESPACE.split(trimmed, -1));
else
throw new ConfigException(name, value, "Expected a comma separated list.");
case CLASS:
Expand Down
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