mcvsubbu commented on a change in pull request #4954: Support schema evolution 
for consuming segments
URL: https://github.com/apache/incubator-pinot/pull/4954#discussion_r363557688
 
 

 ##########
 File path: 
pinot-core/src/main/java/org/apache/pinot/core/segment/index/SegmentMetadataImpl.java
 ##########
 @@ -43,19 +43,19 @@
 import org.apache.commons.configuration.ConfigurationException;
 import org.apache.commons.configuration.PropertiesConfiguration;
 import org.apache.commons.lang.StringEscapeUtils;
-import org.apache.pinot.spi.data.MetricFieldSpec;
-import org.apache.pinot.spi.data.Schema;
 import org.apache.pinot.common.metadata.segment.RealtimeSegmentZKMetadata;
 import org.apache.pinot.common.segment.SegmentMetadata;
 import org.apache.pinot.common.segment.StarTreeMetadata;
-import org.apache.pinot.spi.utils.JsonUtils;
-import org.apache.pinot.spi.utils.TimeUtils;
 import org.apache.pinot.core.indexsegment.generator.SegmentVersion;
 import org.apache.pinot.core.segment.creator.impl.V1Constants;
 import org.apache.pinot.core.segment.creator.impl.V1Constants.MetadataKeys;
 import org.apache.pinot.core.segment.store.SegmentDirectoryPaths;
 import org.apache.pinot.core.startree.v2.StarTreeV2Constants;
 import org.apache.pinot.core.startree.v2.StarTreeV2Metadata;
+import org.apache.pinot.spi.data.MetricFieldSpec;
 
 Review comment:
   no other changes here? why touch this file?

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