[jira] [Commented] (PARQUET-1381) Add merge blocks command to parquet-tools

[ https://issues.apache.org/jira/browse/PARQUET-1381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17745963#comment-17745963 ] ASF GitHub Bot commented on PARQUET-1381: - wgtmac commented on code in PR #1121

[GitHub] [parquet-mr] wgtmac commented on a diff in pull request #1121: PARQUET-1381: Support merging of rowgroups during file rewrite

wgtmac commented on code in PR #1121: URL: https://github.com/apache/parquet-mr/pull/1121#discussion_r1271309683 ## parquet-hadoop/src/main/java/org/apache/parquet/hadoop/rewrite/RowGroupMerger.java: ## @@ -0,0 +1,657 @@ +/* + * Licensed to the Apache Software Foundation (ASF) u

Rewrite Parquet List columns

Hey folks, I have a bunch of parquets written with Level 2 list columns (among other columns). I was trying to extend the Parquet Rewrite tool to be able to read those parquet and only rewrite the list columns as Level 3. Any pointers on which classes or APIs i should leverage for this purpose? An