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Duo Zhang commented on HBASE-28459: ----------------------------------- Haven't found the jira account of the PR's author... I've already replied on the jira to let the contributor register a jira account. Thanks. > HFileOutputFormat2 ClassCastException with s3 magic committer > ------------------------------------------------------------- > > Key: HBASE-28459 > URL: https://issues.apache.org/jira/browse/HBASE-28459 > Project: HBase > Issue Type: Bug > Reporter: Bryan Beaudreault > Priority: Major > Labels: pull-request-available > Fix For: 2.4.18, 2.7.0, 3.0.0-beta-2, 2.6.1, 2.5.9 > > > In hadoop3 there's the s3 magic committer which can speed up s3 writes > dramatically. In HFileOutputFormat2.createRecordWriter we cast the passed in > committer as a FileOutputCommitter. This causes a class cast exception when > the s3 magic committer is enabled: > > {code:java} > Error: java.lang.ClassCastException: class > org.apache.hadoop.fs.s3a.commit.magic.MagicS3GuardCommitter cannot be cast to > class org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter {code} > > We can cast to PathOutputCommitter instead, but its only available in > hadoop3+. So we will need to use reflection to work around this in branch-2. -- This message was sent by Atlassian Jira (v8.20.10#820010)