[GitHub] [orc] guiyanakuang commented on a change in pull request #810: ORC-904: Use Map for userMetadata in ReaderImpl

[GitBox <gi...@apache.org>]

guiyanakuang commented on a change in pull request #810:
URL: https://github.com/apache/orc/pull/810#discussion_r682230563



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File path: java/core/src/java/org/apache/orc/impl/ReaderImpl.java
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@@ -569,7 +561,13 @@ public ReaderImpl(Path path, OrcFile.ReaderOptions options) throws IOException {
       this.rowIndexStride = tail.getFooter().getRowIndexStride();
       this.contentLength = tail.getFooter().getContentLength();
       this.numberOfRows = tail.getFooter().getNumberOfRows();
-      this.userMetadata = tail.getFooter().getMetadataList();
+      this.userMetadata = tail.getFooter().getMetadataList()
+              .stream().collect(Collectors.toMap(

Review comment:
       > If you don't mind, can we indent with `4-space` instead of `8-space`?
   I will fix




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