amith created HDFS-3332: --------------------------- Summary: NullPointerException in DN when directoryscanner is trying to report bad blocks Key: HDFS-3332 URL: https://issues.apache.org/jira/browse/HDFS-3332 Project: Hadoop HDFS Issue Type: Bug Components: data-node Affects Versions: 3.0.0 Environment: HDFS Reporter: amith Assignee: amith Fix For: 3.0.0
There is 1 NN and 1 DN (NN is started with HA conf) I corrupted 1 block and found {code} 2012-04-27 09:59:01,214 INFO datanode.DataNode (BPServiceActor.java:blockReport(401)) - BlockReport of 2 blocks took 0 msec to generate and 5 msecs for RPC and NN processing 2012-04-27 09:59:01,214 INFO datanode.DataNode (BPServiceActor.java:blockReport(420)) - sent block report, processed command:org.apache.hadoop.hdfs.server.protocol.FinalizeCommand@3b756db3 2012-04-27 09:59:01,726 INFO datanode.DirectoryScanner (DirectoryScanner.java:scan(390)) - BlockPool BP-2087868617-10.18.40.95-1335500488012 Total blocks: 2, missing metadata files:0, missing block files:0, missing blocks in memory:0, mismatched blocks:1 2012-04-27 09:59:01,727 WARN impl.FsDatasetImpl (FsDatasetImpl.java:checkAndUpdate(1366)) - Updating size of block -4466699320171028643 from 1024 to 1034 2012-04-27 09:59:01,727 WARN impl.FsDatasetImpl (FsDatasetImpl.java:checkAndUpdate(1374)) - Reporting the block blk_-4466699320171028643_1004 as corrupt due to length mismatch 2012-04-27 09:59:01,728 DEBUG ipc.Client (Client.java:sendParam(807)) - IPC Client (1957050620) connection to /10.18.40.95:8020 from root sending #257 2012-04-27 09:59:01,730 DEBUG ipc.Client (Client.java:receiveResponse(848)) - IPC Client (1957050620) connection to /10.18.40.95:8020 from root got value #257 2012-04-27 09:59:01,730 DEBUG ipc.ProtobufRpcEngine (ProtobufRpcEngine.java:invoke(193)) - Call: reportBadBlocks 2 2012-04-27 09:59:01,731 ERROR datanode.DirectoryScanner (DirectoryScanner.java:run(288)) - Exception during DirectoryScanner execution - will continue next cycle java.lang.NullPointerException at org.apache.hadoop.hdfs.protocol.DatanodeID.<init>(DatanodeID.java:66) at org.apache.hadoop.hdfs.protocol.DatanodeInfo.<init>(DatanodeInfo.java:87) at org.apache.hadoop.hdfs.server.datanode.BPServiceActor.reportBadBlocks(BPServiceActor.java:238) at org.apache.hadoop.hdfs.server.datanode.BPOfferService.reportBadBlocks(BPOfferService.java:187) at org.apache.hadoop.hdfs.server.datanode.DataNode.reportBadBlocks(DataNode.java:559) at org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl.checkAndUpdate(FsDatasetImpl.java:1377) at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.reconcile(DirectoryScanner.java:318) at org.apache.hadoop.hdfs.server.datanode.DirectoryScanner.run(DirectoryScanner.java:284) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) {code} Here when Directory scanner is trying to report badblock we got a NPE. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira