[jira] [Created] (SOLR-7438) Look into using new HDFS truncate feature in HdfsTransactionLog.

["Mark Miller (JIRA)" <ji...@apache.org>]

Mark Miller created SOLR-7438:
---------------------------------

             Summary: Look into using new HDFS truncate feature in HdfsTransactionLog.
                 Key: SOLR-7438
                 URL: https://issues.apache.org/jira/browse/SOLR-7438
             Project: Solr
          Issue Type: Improvement
            Reporter: Mark Miller
            Assignee: Mark Miller


Looks like truncate is added in 2.7.

See HdfsTransactionLog:

{code}
  // HACK
  // while waiting for HDFS-3107, instead of quickly
  // dropping, we slowly apply
  // This is somewhat brittle, but current usage
  // allows for it
  @Override
  public boolean dropBufferedUpdates() {
    Future<RecoveryInfo> future = applyBufferedUpdates();
    if (future != null) {
      try {
        future.get();
      } catch (InterruptedException | ExecutionException e) {
        throw new RuntimeException(e);
      }
    }
    return true;
  }
{code}



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