Github user cloud-fan commented on a diff in the pull request: https://github.com/apache/spark/pull/20386#discussion_r164648815 --- Diff: sql/core/src/main/java/org/apache/spark/sql/sources/v2/writer/DataSourceV2Writer.java --- @@ -63,32 +65,30 @@ DataWriterFactory<Row> createWriterFactory(); /** - * Commits this writing job with a list of commit messages. The commit messages are collected from - * successful data writers and are produced by {@link DataWriter#commit()}. + * Handles a commit message produced by {@link DataWriter#commit()}. * * If this method fails (by throwing an exception), this writing job is considered to to have been - * failed, and {@link #abort(WriterCommitMessage[])} would be called. The state of the destination - * is undefined and @{@link #abort(WriterCommitMessage[])} may not be able to deal with it. + * failed, and {@link #abort()} would be called. The state of the destination + * is undefined and @{@link #abort()} may not be able to deal with it. --- End diff -- add some more comments to say that, implementations should probably cache the commit messages and do the final step in #commit
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