Walter Su created HDFS-8339:
-------------------------------
Summary: Erasure Coding: Badly treated when
createBlockOutputStream failed in DataStreamer
Key: HDFS-8339
URL: https://issues.apache.org/jira/browse/HDFS-8339
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Walter Su
h4. Issue 1:
leading streamer calls abandonBlock(..) and get new blockGroup from NN, primary
streamer should sync with non-leading streamer instead of throw exception(
offer twice to stripedBlock blockingQueue).
{noformat}
2015-05-07 18:58:05,335 INFO hdfs.DataStreamer
(DataStreamer.java:nextBlockOutputStream(1386)) - Abandoning
BP-172584615-9.96.1.34-1430996280714:blk_-9223372036854775792_1001
...
2015-05-07 18:58:05,373 WARN hdfs.DataStreamer (DataStreamer.java:run(572)) -
DataStreamer Exception
java.io.IOException: Failed:
LocatedBlock{BP-172584615-9.96.1.34-1430996280714:blk_-9223372036854775770_1002;
getBlockSize()=0; corrupt=false; offset=1572864;
locs=[DatanodeInfoWithStorage[127.0.0.1:52490,DS-6080b76f-adf7-45a8-aa0e-e0e82c2c1569,DISK]]},
i=6
at
org.apache.hadoop.hdfs.DFSStripedOutputStream$Coordinator.putStripedBlock(DFSStripedOutputStream.java:117)
at
org.apache.hadoop.hdfs.StripedDataStreamer.locateFollowingBlock(StripedDataStreamer.java:120)
at
org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1364)
at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:461)
at
org.apache.hadoop.hdfs.StripedDataStreamer.run(StripedDataStreamer.java:48)
{noformat}
h4. Issue 2:
non-leading streamer calls abandonBlock(..) and get new locatedBlock from
coordinator. Actually it's the last blockGroup, no more locatedBlock can poll
from stripedBlocks blockingQueue. Other 8 streamer finished and closed, but
this streamer hangs about 90 seconds.
{noformat}
2015-05-07 19:21:25,357 INFO BlockStateChange
(BlockManager.java:logAddStoredBlock(2768)) - BLOCK* addStoredBlock: blockMap
updated: 127.0.0.1:51998 is added to ...
2015-05-07 19:22:55,250 WARN hdfs.DataStreamer (DataStreamer.java:run(572)) -
DataStreamer Exception
java.io.IOException: Failed: i=1
at
org.apache.hadoop.hdfs.DFSStripedOutputStream$Coordinator.getStripedBlock(DFSStripedOutputStream.java:130)
at
org.apache.hadoop.hdfs.StripedDataStreamer.locateFollowingBlock(StripedDataStreamer.java:124)
at
org.apache.hadoop.hdfs.DataStreamer.nextBlockOutputStream(DataStreamer.java:1364)
at org.apache.hadoop.hdfs.DataStreamer.run(DataStreamer.java:461)
at
org.apache.hadoop.hdfs.StripedDataStreamer.run(StripedDataStreamer.java:48)
{noformat}
h4. Issue 3:
remove abandonBlock(..) RPC call for non-leading streamer
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
