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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/998/
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(Updated 2011-08-23 22:55:47.297820)
Review request for hadoop-hdfs, Dhruba Borthakur and Hairong Kuang.
Changes
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Adjusted to recent code changes.
Fized offerService comment.
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 (updated)
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trunk/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
1160919
trunk/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
1160919
trunk/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FSDataset.java
1160919
trunk/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FSDatasetAsyncDiskService.java
1160919
trunk/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java
1160919
trunk/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/BlockCommand.java
1160919
trunk/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/DatanodeProtocol.java
1160919
trunk/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/protocol/ReceivedDeletedBlockInfo.java
PRE-CREATION
trunk/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/NNThroughputBenchmark.java
1160919
trunk/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestDeadDatanode.java
1160919
Diff: https://reviews.apache.org/r/998/diff
Testing
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Will do JUnit tests.
Thanks,
Tomasz
