Hi, thanks for the input. We use https://www.hetzner.de/gb/hosting/produkte_rootserver/ex40 Each node has 2 HDD.
2015-04-24 19:07 GMT+02:00 Esteban Gutierrez <este...@cloudera.com>: > Hi Serega, > > > The iostat data shows a very sharp spike in await time (I know is outside > of the logs time range) and utilization is high but hard to tell if the > drives in the DNs are getting saturated continuously since it looks like > averaged metric. Is this some kind of virtualized environment? are you > using a NAS for the data volumes? If you look into the logs in context, > seems that there is a bad data node that is causing issues in the HDFS > pipeline and causing issues. > > cheers, > esteban. > > > > -- > Cloudera, Inc. > > > On Thu, Apr 23, 2015 at 1:37 PM, Serega Sheypak <serega.shey...@gmail.com> > wrote: > > > Hi, is there any input here? What we should monitor? > > > > 2015-04-22 20:55 GMT+02:00 Serega Sheypak <serega.shey...@gmail.com>: > > > > > Here is disk stats. Sadness appeared ad 12.30 - 13.00 > > > > > > > > > https://www.dropbox.com/s/lj4r8o10buv1n2o/Screenshot%202015-04-22%2020.48.18.png?dl=0 > > > > > > 2015-04-22 20:41 GMT+02:00 Serega Sheypak <serega.shey...@gmail.com>: > > > > > >> Here is an image > > >> > > >> 2015-04-22 20:40 GMT+02:00 Serega Sheypak <serega.shey...@gmail.com>: > > >> > > >>> Here are datanode logs from 5.9.41.237 <http://5.9.41.237:50010/>, > > >>> regionserver logs were from5.9.41.237 <http://5.9.41.237:50010/> > also > > >>> > > >>> EQUEST_SHORT_CIRCUIT_FDS, blockid: 1078130838, srvID: > > >>> 659e6be2-8d98-458b-94bc-3bcdbb517508, success: true > > >>> 2015-04-22 12:46:17,154 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: > > >>> 127.0.0.1, dest: 127.0.0.1, op: RELEASE_SHORT_CIRCUIT_FDS, shmId: > > >>> bd37825f7a445e2da6796940ebb754d6, slotIdx: 24, srvID: > > >>> 659e6be2-8d98-458b-94bc-3bcdbb517508, success: true > > >>> 2015-04-22 12:46:17,204 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: > > >>> 127.0.0.1, dest: 127.0.0.1, op: RELEASE_SHORT_CIRCUIT_FDS, shmId: > > >>> aea53fb897c383f3dec304ed618db0df, slotIdx: 4, srvID: > > >>> 659e6be2-8d98-458b-94bc-3bcdbb517508, success: true > > >>> 2015-04-22 12:46:17,219 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: > > >>> 127.0.0.1, dest: 127.0.0.1, op: RELEASE_SHORT_CIRCUIT_FDS, shmId: > > >>> 0178cc0245fcdc9e1dd75c5f8c6da1eb, slotIdx: 0, srvID: > > >>> 659e6be2-8d98-458b-94bc-3bcdbb517508, success: true > > >>> 2015-04-22 12:46:17,236 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: > > >>> 127.0.0.1, dest: 127.0.0.1, op: RELEASE_SHORT_CIRCUIT_FDS, shmId: > > >>> aea53fb897c383f3dec304ed618db0df, slotIdx: 102, srvID: > > >>> 659e6be2-8d98-458b-94bc-3bcdbb517508, success: true > > >>> 2015-04-22 12:46:17,573 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /5.9.65.143:36281, bytes: 4608, op: > HDFS_READ, > > >>> cliID: DFSClient_hb_rs_domain06.myhost.ru > > ,60020,1426776843636_-1084357126_33, > > >>> offset: 28435456, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, > blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078147715_4407483, > duration: > > >>> 12396486 > > >>> 2015-04-22 12:46:17,596 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /78.46.48.37:41539, bytes: 4608, op: > > HDFS_READ, > > >>> cliID: DFSClient_hb_rs_domain13.myhost.ru > > ,60020,1429640630559_-531755738_33, > > >>> offset: 56052736, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, > blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078106901_4366668, > duration: > > >>> 37455427 > > >>> 2015-04-22 12:46:17,821 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /5.9.67.100:58718, bytes: 5120, op: > HDFS_READ, > > >>> cliID: DFSClient_hb_rs_domain03.myhost.ru > > ,60020,1426877064271_-1246826933_33, > > >>> offset: 77630464, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, > blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078119757_4379524, > duration: > > >>> 16386940 > > >>> 2015-04-22 12:46:18,769 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: Failed to send data: > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/78.46.48.37:40503] > > >>> 2015-04-22 12:46:18,769 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /78.46.48.37:40503, bytes: 393216, op: > > >>> HDFS_READ, cliID: DFSClient_hb_rs_domain13.myhost.ru > > ,60020,1429640630559_-531755738_33, > > >>> offset: 3584, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078155386_4415154, > duration: > > >>> 480345113893 > > >>> 2015-04-22 12:46:18,769 WARN > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: > > >>> DatanodeRegistration(5.9.41.237, > > >>> datanodeUuid=659e6be2-8d98-458b-94bc-3bcdbb517508, infoPort=50075, > > >>> ipcPort=50020, > storageInfo=lv=-56;cid=cluster11;nsid=527111981;c=0):Got > > >>> exception while serving > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078155386_4415154 to / > > >>> 78.46.48.37:40503 > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/78.46.48.37:40503] > > >>> at > > >>> > > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:172) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:220) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:547) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:716) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:486) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:111) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:69) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225) > > >>> at java.lang.Thread.run(Thread.java:745) > > >>> 2015-04-22 12:46:18,770 ERROR > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: > > domain02.myhost.ru:50010:DataXceiver > > >>> error processing READ_BLOCK operation src: /78.46.48.37:40503 dst: > / > > >>> 5.9.41.237:50010 > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/78.46.48.37:40503] > > >>> at > > >>> > > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:172) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:220) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:547) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:716) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:486) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:111) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:69) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225) > > >>> at java.lang.Thread.run(Thread.java:745) > > >>> 2015-04-22 12:46:18,897 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: Failed to send data: > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/5.9.74.13:34323] > > >>> 2015-04-22 12:46:18,897 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /5.9.74.13:34323, bytes: 393216, op: > > HDFS_READ, > > >>> cliID: DFSClient_hb_rs_domain09.myhost.ru > > ,60020,1426772397450_1095315710_33, > > >>> offset: 3584, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078159305_4419073, > duration: > > >>> 480265217202 > > >>> 2015-04-22 12:46:18,897 WARN > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: > > >>> DatanodeRegistration(5.9.41.237, > > >>> datanodeUuid=659e6be2-8d98-458b-94bc-3bcdbb517508, infoPort=50075, > > >>> ipcPort=50020, > storageInfo=lv=-56;cid=cluster11;nsid=527111981;c=0):Got > > >>> exception while serving > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078159305_4419073 to / > > >>> 5.9.74.13:34323 > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/5.9.74.13:34323] > > >>> at > > >>> > > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:172) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:220) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:547) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:716) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:486) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:111) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:69) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225) > > >>> at java.lang.Thread.run(Thread.java:745) > > >>> 2015-04-22 12:46:18,898 ERROR > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: > > domain02.myhost.ru:50010:DataXceiver > > >>> error processing READ_BLOCK operation src: /5.9.74.13:34323 dst: / > > >>> 5.9.41.237:50010 > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/5.9.74.13:34323] > > >>> at > > >>> > > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:172) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:220) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:547) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:716) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:486) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:111) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:69) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225) > > >>> at java.lang.Thread.run(Thread.java:745) > > >>> 2015-04-22 12:46:18,933 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: Failed to send data: > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/5.9.37.17:48803] > > >>> 2015-04-22 12:46:18,933 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /5.9.37.17:48803, bytes: 393216, op: > > HDFS_READ, > > >>> cliID: DFSClient_hb_rs_domain07.myhost.ru > > ,60020,1426776403757_1987133929_33, > > >>> offset: 3584, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078158534_4418302, > duration: > > >>> 480375396714 > > >>> 2015-04-22 12:46:18,933 WARN > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: > > >>> DatanodeRegistration(5.9.41.237, > > >>> datanodeUuid=659e6be2-8d98-458b-94bc-3bcdbb517508, infoPort=50075, > > >>> ipcPort=50020, > storageInfo=lv=-56;cid=cluster11;nsid=527111981;c=0):Got > > >>> exception while serving > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078158534_4418302 to / > > >>> 5.9.37.17:48803 > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/5.9.37.17:48803] > > >>> at > > >>> > > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:172) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:220) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:547) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:716) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:486) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:111) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:69) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225) > > >>> at java.lang.Thread.run(Thread.java:745) > > >>> 2015-04-22 12:46:18,934 ERROR > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: > > domain02.myhost.ru:50010:DataXceiver > > >>> error processing READ_BLOCK operation src: /5.9.37.17:48803 dst: / > > >>> 5.9.41.237:50010 > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/5.9.37.17:48803] > > >>> at > > >>> > > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:172) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:220) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:547) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:716) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:486) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:111) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:69) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225) > > >>> at java.lang.Thread.run(Thread.java:745) > > >>> 2015-04-22 12:46:20,478 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: Failed to send data: > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/5.9.77.105:36871] > > >>> 2015-04-22 12:46:20,478 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /5.9.77.105:36871, bytes: 327680, op: > > >>> HDFS_READ, cliID: DFSClient_hb_rs_domain01.myhost.ru > > ,60020,1427209265829_704706779_33, > > >>> offset: 3584, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078159312_4419080, > duration: > > >>> 480489227857 > > >>> 2015-04-22 12:46:20,478 WARN > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: > > >>> DatanodeRegistration(5.9.41.237, > > >>> datanodeUuid=659e6be2-8d98-458b-94bc-3bcdbb517508, infoPort=50075, > > >>> ipcPort=50020, > storageInfo=lv=-56;cid=cluster11;nsid=527111981;c=0):Got > > >>> exception while serving > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078159312_4419080 to / > > >>> 5.9.77.105:36871 > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/5.9.77.105:36871] > > >>> at > > >>> > > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:172) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:220) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:547) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:716) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:486) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:111) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:69) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225) > > >>> at java.lang.Thread.run(Thread.java:745) > > >>> 2015-04-22 12:46:20,478 ERROR > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: > > domain02.myhost.ru:50010:DataXceiver > > >>> error processing READ_BLOCK operation src: /5.9.77.105:36871 dst: / > > >>> 5.9.41.237:50010 > > >>> java.net.SocketTimeoutException: 480000 millis timeout while waiting > > for > > >>> channel to be ready for write. ch : > > >>> java.nio.channels.SocketChannel[connected local=/5.9.41.237:50010 > > >>> remote=/5.9.77.105:36871] > > >>> at > > >>> > > > org.apache.hadoop.net.SocketIOWithTimeout.waitForIO(SocketIOWithTimeout.java:246) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.waitForWritable(SocketOutputStream.java:172) > > >>> at > > >>> > > > org.apache.hadoop.net.SocketOutputStream.transferToFully(SocketOutputStream.java:220) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendPacket(BlockSender.java:547) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.BlockSender.sendBlock(BlockSender.java:716) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.readBlock(DataXceiver.java:486) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.opReadBlock(Receiver.java:111) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.protocol.datatransfer.Receiver.processOp(Receiver.java:69) > > >>> at > > >>> > > > org.apache.hadoop.hdfs.server.datanode.DataXceiver.run(DataXceiver.java:225) > > >>> at java.lang.Thread.run(Thread.java:745) > > >>> 2015-04-22 12:46:20,677 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /5.9.65.143:36286, bytes: 5120, op: > HDFS_READ, > > >>> cliID: DFSClient_hb_rs_domain06.myhost.ru > > ,60020,1426776843636_-1084357126_33, > > >>> offset: 86653440, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, > blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078128115_4387882, > duration: > > >>> 17623602 > > >>> 2015-04-22 12:46:20,690 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /78.46.48.38:57022, bytes: 5120, op: > > HDFS_READ, > > >>> cliID: DFSClient_hb_rs_domain14.myhost.ru > > ,60020,1429640630771_156324173_33, > > >>> offset: 103135232, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, > > blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078120513_4380280, > duration: > > >>> 24431169 > > >>> 2015-04-22 12:46:20,747 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: / > > >>> 5.9.41.237:50010, dest: /5.9.40.136:34501, bytes: 5120, op: > HDFS_READ, > > >>> cliID: DFSClient_hb_rs_domain04.myhost.ru > > ,60020,1426774142736_-1119788258_33, > > >>> offset: 78469632, srvID: 659e6be2-8d98-458b-94bc-3bcdbb517508, > blockid: > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078108223_4367990, > duration: > > >>> 76055489 > > >>> 2015-04-22 12:46:20,758 INFO > > >>> org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving > > >>> BP-927943268-5.9.77.105-1414682145673:blk_1078160469_4420237 src: / > > >>> 5.9.74.13:35440 dest: /5.9.41.237:50010 > > >>> > > >>> > > >>> 2015-04-22 20:30 GMT+02:00 Jean-Marc Spaggiari < > > jean-m...@spaggiari.org> > > >>> : > > >>> > > >>>> Did you send the logs from one of those 3 servers? [ > 5.9.41.237:50010, > > >>>> 5.9.77.105:50010, 5.9.73.19:50010] > > >>>> > > >>>> Sound like something is slowing done everything. Can you extract DN > > logs > > >>>> for the same time? > > >>>> > > >>>> Do you have any tool monitoring the disks and network latency over > > time? > > >>>> > > >>>> If not, can you run iostat and try to reproduce the issue? > > >>>> > > >>>> JM > > >>>> > > >>>> 2015-04-22 14:23 GMT-04:00 Serega Sheypak <serega.shey...@gmail.com > >: > > >>>> > > >>>> > > major compaction runs daily. > > >>>> > > > >>>> > >What else do you see in the RS logs? > > >>>> > no error, only *Slow sync cost * > > >>>> > > > >>>> > >How iostat looks like? > > >>>> > please see image. 12.00 - 12.30 is a time when reading/writing > > stopped > > >>>> > [image: Встроенное изображение 1] > > >>>> > > > >>>> > > > >>>> > >Can you share the logs around the time this occurs? > > >>>> > 2015-04-22 12:53:09,996 WARN org.apache.hadoop.ipc.RpcServer: > > >>>> > (responseTooSlow): > > >>>> > > > >>>> > > > {"processingtimems":20128,"call":"Multi(org.apache.hadoop.hbase.protobuf.generated.ClientProtos$MultiRequest)","client":" > > >>>> > 5.9.75.155:58344 > > >>>> > > > >>>> > > > ","starttimems":1429692769868,"queuetimems":28034,"class":"HRegionServer","responsesize":8,"method":"Multi"} > > >>>> > 2015-04-22 12:53:09,996 WARN org.apache.hadoop.ipc.RpcServer: > > >>>> > (responseTooSlow): > > >>>> > > > >>>> > > > {"processingtimems":21434,"call":"Mutate(org.apache.hadoop.hbase.protobuf.generated.ClientProtos$MutateRequest)","client":" > > >>>> > 46.4.0.110:60149 > > >>>> > > > >>>> > > > ","starttimems":1429692768562,"queuetimems":44263,"class":"HRegionServer","responsesize":2,"method":"Mutate"} > > >>>> > 2015-04-22 12:53:10,093 WARN org.apache.hadoop.ipc.RpcServer: > > >>>> > (responseTooSlow): > > >>>> > > > >>>> > > > {"processingtimems":17997,"call":"Mutate(org.apache.hadoop.hbase.protobuf.generated.ClientProtos$MutateRequest)","client":"46.4.0. > > >>>> > > > >>>> > 015-04-22 12:53:10,270 WARN org.apache.hadoop.ipc.RpcServer: > > >>>> > (responseTooSlow): > > >>>> > > > >>>> > > > {"processingtimems":18175,"call":"Mutate(org.apache.hadoop.hbase.protobuf.generated.ClientProtos$MutateRequest)","client":" > > >>>> > 144.76.218.107:48620 > > >>>> > > > >>>> > > > ","starttimems":1429692772095,"queuetimems":49253,"class":"HRegionServer","responsesize":2,"method":"Mutate"} > > >>>> > 2015-04-22 12:53:10,315 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 319 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:10,315 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 319 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:10,315 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 319 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:10,315 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 319 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:10,315 WARN org.apache.hadoop.ipc.RpcServer: > > >>>> > (responseTooSlow): > > >>>> > {"processingtimems":20231,"call":"Mutate(org.apache.hadoop.hbase. > > >>>> > > > >>>> > 2015-04-22 12:53:11,726 INFO > > >>>> org.apache.hadoop.hbase.regionserver.HStore: > > >>>> > Added > > >>>> > > > >>>> > > > hdfs://nameservice1/hbase/data/default/cross_id_to_rtb_user/d2e01ed1de47dd92edb5c1de37277d4a/c/a93405e51088418ba95241cf53456011, > > >>>> > entries=926, sequenceid=43403085, filesize=258.5 K > > >>>> > 2015-04-22 12:53:11,726 INFO > > >>>> org.apache.hadoop.hbase.regionserver.HRegion: > > >>>> > Finished memstore flush of ~3.8 M/3985504, currentsize=12.6 > K/12912 > > >>>> for > > >>>> > region > > >>>> > > > >>>> > > > cross_id_to_rtb_user,aadf0929,1429256709528.d2e01ed1de47dd92edb5c1de37277d4a. > > >>>> > in 857ms, sequenceid=43403085, compaction requested=true > > >>>> > 2015-04-22 12:53:11,726 INFO > > >>>> org.apache.hadoop.hbase.regionserver.HRegion: > > >>>> > Starting compaction on c in region > > >>>> > > > >>>> > > > cross_id_to_rtb_user,aadf0929,1429256709528.d2e01ed1de47dd92edb5c1de37277d4a. > > >>>> > 2015-04-22 12:53:11,726 INFO > > >>>> org.apache.hadoop.hbase.regionserver.HStore: > > >>>> > Starting compaction of 3 file(s) in c of > > >>>> > > > >>>> > > > cross_id_to_rtb_user,aadf0929,1429256709528.d2e01ed1de47dd92edb5c1de37277d4a. > > >>>> > into > > >>>> > > > >>>> > > > tmpdir=hdfs://nameservice1/hbase/data/default/cross_id_to_rtb_user/d2e01ed1de47dd92edb5c1de37277d4a/.tmp, > > >>>> > totalSize=8.0 M > > >>>> > 2015-04-22 12:53:11,917 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 417 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:11,939 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 340 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:11,939 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 340 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:11,939 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 340 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:11,939 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 340 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:12,199 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > 282 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:13,132 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > > 1193 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:13,132 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > > 1193 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:13,132 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > > 1193 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:13,132 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.wal.FSHLog: Slow sync cost: > > 1193 > > >>>> ms, > > >>>> > current pipeline: [5.9.41.237:50010, 5.9.77.105:50010, > > >>>> 5.9.73.19:50010] > > >>>> > 2015-04-22 12:53:13,247 INFO > > >>>> > org.apache.hadoop.hbase.regionserver.DefaultStoreFlusher: Flushed, > > >>>> > sequenceid=41975630, memsize=3.6 M, hasBloomFilter=true, into tmp > > file > > >>>> > > > >>>> > > > hdfs://nameservice1/hbase/data/default/rtb_user_to_cross_id/c54d51dd7f20377ea34f05824abbaf76/.tmp/3495a2b487fa448bb9e0b50050b11c3a > > >>>> > 2015-04-22 12:53:13,301 INFO > > >>>> org.apache.hadoop.hbase.regionserver.HStore: > > >>>> > Added > > >>>> > > > >>>> > > > hdfs://nameservice1/hbase/data/default/rtb_user_to_cross_id/c54d51dd7f20377ea34f05824abbaf76/c/3495a2b487fa448bb9e0b50050b11c3a, > > >>>> > entries=886, sequenceid=41975630, filesize=272.9 K > > >>>> > > > >>>> > 2015-04-22 19:54 GMT+02:00 Ted Yu <yuzhih...@gmail.com>: > > >>>> > > > >>>> >> Serega: > > >>>> >> How often is major compaction run in your cluster ? > > >>>> >> > > >>>> >> Have you configured offpeak compaction ? > > >>>> >> See related parameters in: > > >>>> >> http://hbase.apache.org/book.html#compaction.parameters > > >>>> >> > > >>>> >> Cheers > > >>>> >> > > >>>> >> On Wed, Apr 22, 2015 at 10:39 AM, Serega Sheypak < > > >>>> >> serega.shey...@gmail.com> > > >>>> >> wrote: > > >>>> >> > > >>>> >> > Hi, we have 10 nodes cluster running HBase 0.98 CDH 5.2.1 > > >>>> >> > Sometimes HBase stucks. > > >>>> >> > We have several apps constantly writing/reading data from it. > > >>>> Sometimes > > >>>> >> we > > >>>> >> > see that apps response time dramatically increases. It means > that > > >>>> app > > >>>> >> > spends seconds to read/write from/to HBase. in 99% of time it > > takes > > >>>> >> 20ms. > > >>>> >> > > > >>>> >> > I suppose that compactions/major compactions could be the root > > >>>> cause. I > > >>>> >> see > > >>>> >> > that compactions start at the same time when we have problems > > with > > >>>> app. > > >>>> >> > Could it be so? > > >>>> >> > So HBase can't write to WAL because compactions consumes all IO > > >>>> and apps > > >>>> >> > stops to write data? > > >>>> >> > > > >>>> >> > > >>>> > > > >>>> > > > >>>> > > >>> > > >>> > > >> > > > > > >
