HDFS-11305: libhdfs++: Log Datanode information when reading an HDFS block. Contributed by Xiaowei Zhu.
Project: http://git-wip-us.apache.org/repos/asf/hadoop/repo Commit: http://git-wip-us.apache.org/repos/asf/hadoop/commit/881fc77b Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/881fc77b Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/881fc77b Branch: refs/heads/HDFS-12996 Commit: 881fc77b27717784f439d637d411145314c91e8b Parents: 7b7b91a Author: James <j...@apache.org> Authored: Tue Jan 10 11:25:56 2017 -0500 Committer: Hanisha Koneru <hanishakon...@apache.org> Committed: Mon Mar 26 11:11:03 2018 -0700 ---------------------------------------------------------------------- .../src/main/native/libhdfspp/lib/fs/filehandle.cc | 6 ++++++ 1 file changed, 6 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/hadoop/blob/881fc77b/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/fs/filehandle.cc ---------------------------------------------------------------------- diff --git a/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/fs/filehandle.cc b/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/fs/filehandle.cc index 03c517b..1f553a0 100644 --- a/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/fs/filehandle.cc +++ b/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/fs/filehandle.cc @@ -225,6 +225,12 @@ void FileHandleImpl::AsyncPreadSome( DatanodeInfoProto &chosen_dn = *it; + std::string dnIpAddr = chosen_dn.id().ipaddr(); + std::string dnHostName = chosen_dn.id().hostname(); + LOG_DEBUG(kFileHandle, << "FileHandleImpl::AsyncPreadSome(" + << FMT_THIS_ADDR << "), ...) Datanode hostname=" << dnHostName << ", IP Address=" << dnIpAddr + << ", file path=\"" << path_ << "\", offset=" << offset); + uint64_t offset_within_block = offset - block->offset(); uint64_t size_within_block = std::min<uint64_t>( block->b().numbytes() - offset_within_block, asio::buffer_size(buffers)); --------------------------------------------------------------------- To unsubscribe, e-mail: common-commits-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-commits-h...@hadoop.apache.org
