Ted Yu created HDFS-4853:
----------------------------
Summary: Handle unresolved InetAddress for favored nodes in
DFSClient#create()
Key: HDFS-4853
URL: https://issues.apache.org/jira/browse/HDFS-4853
Project: Hadoop HDFS
Issue Type: Bug
Affects Versions: 2.0.5-beta
Reporter: Ted Yu
The underlying API is:
{code}
public DFSOutputStream create(String src,
FsPermission permission,
EnumSet<CreateFlag> flag,
boolean createParent,
short replication,
long blockSize,
Progressable progress,
int buffersize,
ChecksumOpt checksumOpt,
InetSocketAddress[] favoredNodes) throws
IOException {
{code}
Here is related code:
{code}
favoredNodeStrs[i] =
favoredNodes[i].getAddress().getHostAddress() + ":"
+ favoredNodes[i].getPort();
{code}
I observed the following stack trace in HBase unit test:
{code}
testFavoredNodes(org.apache.hadoop.hbase.regionserver.TestRegionFavoredNodes)
Time elapsed: 0.106 sec <<< ERROR!
org.apache.hadoop.hbase.exceptions.DroppedSnapshotException: region:
table,rrr,1369355298031.1fdb1b446b02b497f0869a08adad7745.
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1568)
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1429)
at
org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:1347)
at
org.apache.hadoop.hbase.MiniHBaseCluster.flushcache(MiniHBaseCluster.java:531)
at
org.apache.hadoop.hbase.HBaseTestingUtility.flush(HBaseTestingUtility.java:961)
at
org.apache.hadoop.hbase.regionserver.TestRegionFavoredNodes.testFavoredNodes(TestRegionFavoredNodes.java:132)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at
org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at
org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at
org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at
org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at
org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at
org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.junit.runners.Suite.runChild(Suite.java:127)
at org.junit.runners.Suite.runChild(Suite.java:26)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: java.lang.NullPointerException
at org.apache.hadoop.hbase.util.FSUtils.create(FSUtils.java:293)
at
org.apache.hadoop.hbase.io.hfile.AbstractHFileWriter.createOutputStream(AbstractHFileWriter.java:268)
at
org.apache.hadoop.hbase.io.hfile.HFile$WriterFactory.create(HFile.java:427)
at
org.apache.hadoop.hbase.regionserver.StoreFile$Writer.<init>(StoreFile.java:791)
at
org.apache.hadoop.hbase.regionserver.StoreFile$Writer.<init>(StoreFile.java:733)
at
org.apache.hadoop.hbase.regionserver.StoreFile$WriterBuilder.build(StoreFile.java:671)
at
org.apache.hadoop.hbase.regionserver.HStore.createWriterInTmp(HStore.java:799)
at
org.apache.hadoop.hbase.regionserver.DefaultStoreFlusher.flushSnapshot(DefaultStoreFlusher.java:75)
at
org.apache.hadoop.hbase.regionserver.HStore.flushCache(HStore.java:704)
at
org.apache.hadoop.hbase.regionserver.HStore$StoreFlusherImpl.flushCache(HStore.java:1813)
at
org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1543)
... 33 more
Caused by: java.lang.NullPointerException
at org.apache.hadoop.hdfs.DFSClient.create(DFSClient.java:1306)
at
org.apache.hadoop.hdfs.DistributedFileSystem.create(DistributedFileSystem.java:283)
{code}
Looks like one of the favored nodes couldn't resolve
favoredNodes[i].getAddress(), leading to NullPointerException.
--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira
