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Posted to common-commits@hadoop.apache.org by jh...@apache.org on 2018/03/22 20:43:14 UTC
[28/50] [abbrv] hadoop git commit: HDFS-11305: libhdfs++: Log
Datanode information when reading an HDFS block. Contributed by Xiaowei Zhu.
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/d083e504
Tree: http://git-wip-us.apache.org/repos/asf/hadoop/tree/d083e504
Diff: http://git-wip-us.apache.org/repos/asf/hadoop/diff/d083e504
Branch: refs/heads/HDFS-8707
Commit: d083e504f250e956bbc12af0d55f5b934a1ef96d
Parents: da4830f
Author: James <jh...@apache.org>
Authored: Tue Jan 10 11:25:56 2017 -0500
Committer: James Clampffer <ja...@hp.com>
Committed: Thu Mar 22 16:20:45 2018 -0400
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.../src/main/native/libhdfspp/lib/fs/filehandle.cc | 6 ++++++
1 file changed, 6 insertions(+)
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http://git-wip-us.apache.org/repos/asf/hadoop/blob/d083e504/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfspp/lib/fs/filehandle.cc
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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));
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