Walter Su created HDFS-7633: ------------------------------- Summary: When Datanode has too many blocks, BlockPoolSliceScanner.getNewBlockScanTime thows IllegalArgumentException Key: HDFS-7633 URL: https://issues.apache.org/jira/browse/HDFS-7633 Project: Hadoop HDFS Issue Type: Bug Components: datanode Affects Versions: 2.6.0 Reporter: Walter Su Priority: Minor
When Total blocks of one of my DNs reaches 33554432, It refuses to accept more blocks, this is the ERROR. 2015-01-16 15:21:44,571 | ERROR | DataXceiver for client at /172.1.1.8:50490 [Receiving block BP-1976278848-172.1.1.2-1419846518085:blk_1221043436_147936990] | datasight-198:25009:DataXceiver error processing WRITE_BLOCK operation src: /172.1.1.8:50490 dst: /172.1.1.11:25009 | org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:250) java.lang.IllegalArgumentException: n must be positive at java.util.Random.nextInt(Random.java:300) at org.apache.hadoop.hdfs.server.datanode.BlockPoolSliceScanner.getNewBlockScanTime(BlockPoolSliceScanner.java:263) at org.apache.hadoop.hdfs.server.datanode.BlockPoolSliceScanner.addBlock(BlockPoolSliceScanner.java:276) at org.apache.hadoop.hdfs.server.datanode.DataBlockScanner.addBlock(DataBlockScanner.java:193) at org.apache.hadoop.hdfs.server.datanode.DataNode.closeBlock(DataNode.java:1733) at org.apache.hadoop.hdfs.server.datanode.DataXceiver.writeBlock(DataXceiver.java:765) at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opWriteBlock(Receiver.java:124) at org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:71) at org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:232) at java.lang.Thread.run(Thread.java:745) in function org.apache.hadoop.hdfs.server.datanode.BlockPoolSliceScanner.getNewBlockScanTime() when blockMap.size() is too big, Math.max(blockMap.size(),1) is negtive Math.max(blockMap.size(),1) * 600 * 1000L is negtive (int)period is Integer.MIN_VALUE Math.abs((int)period) is Integer.MIN_VALUE , which is negtive DFSUtil.getRandom().nextInt(periodInt) will thows IllegalArgumentException I use Java HotSpot (build 1.7.0_05-b05) -- This message was sent by Atlassian JIRA (v6.3.4#6332)