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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/998/
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Review request for hadoop-hdfs, Dhruba Borthakur and Hairong Kuang.
Summary
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This patch introduces explicit ACKs sent form datanodes to the namenode in
order to minimize the difference between NN blocks info and DN state.
This will allow for sending the full block reports less frequently, which in
turn will minimize the overhead of processing them, and blocking the namenode
for extended time.
This addresses bug HDFS-395.
https://issues.apache.org/jira/browse/HDFS-395
Diffs
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trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
1142055
trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/datanode/FSDataset.java
1142055
trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
1142055
trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java
1142055
trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/protocol/DatanodeProtocol.java
1142055
trunk/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/server/namenode/NNThroughputBenchmark.java
1142055
trunk/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/server/namenode/TestDeadDatanode.java
1142055
Diff: https://reviews.apache.org/r/998/diff
Testing
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Will do JUnit tests.
Thanks,
Tomasz
