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From Harshit Mathur <mathursh...@gmail.com>
Subject Re: HDFS datanode used space is increasing without any writes
Date Tue, 28 Jul 2015 17:08:35 GMT
Are there any map reduce jobs running?
On Jul 28, 2015 10:11 PM, "Akmal Abbasov" <akmal.abbasov@icloud.com> wrote:

> Hi, I’m observing strange behaviour in HDFS/HBase cluster.
> The disk space of one of datanodes is increasing very fast even when there
> are no write requests.
> It is 8GB per hour in average. Here is the graph which shows it.
> I am using hbase-0.98.7-hadoop2 and hadoop-2.5.1.
>
> And this is logs from the node
> 2015-07-28 15:40:38,795 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /
> 10.32.1.12:50010, dest: /10.32.0.140:38699, bytes: 1071, op: HDFS_READ,
> cliID: DFSClient_NONMAPREDUCE_-689748537_1, offset: 0, srvID:
> 6c25ffd4-3dc7-4e3a-af56-5cc8aa9220e0, blockid:
> BP-439084760-10.32.0.180-1387281790961:blk_1074784244_1045663, duration:
> 17759797
> 2015-07-28 15:41:15,111 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving
> BP-439084760-10.32.0.180-1387281790961:blk_1075311714_1574450 src: /
> 10.0.0.21:60540 dest: /10.32.1.12:50010
> 2015-07-28 15:41:15,304 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /
> 10.0.0.21:59054, dest: /10.32.1.12:50010, bytes: 124121, op: HDFS_WRITE,
> cliID: DFSClient_hb_rs_hbase-rs4,60020,1438094355024_530940245_35, offset:
> 0, srvID: 6c25ffd4-3dc7-4e3a-af56-5cc8aa9220e0, blockid:
> BP-439084760-10.32.0.180-1387281790961:blk_1075311536_1574238, duration:
> 3600203675041
> 2015-07-28 15:41:15,304 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder:
> BP-439084760-10.32.0.180-1387281790961:blk_1075311536_1574238,
> type=HAS_DOWNSTREAM_IN_PIPELINE terminating
> 2015-07-28 15:50:40,745 WARN
> org.apache.hadoop.hdfs.server.datanode.DataNode: Slow BlockReceiver write
> data to disk cost:6099ms (threshold=300ms)
> 2015-07-28 15:59:21,130 INFO
> org.apache.hadoop.hdfs.server.datanode.DirectoryScanner: BlockPool
> BP-439084760-10.32.0.180-1387281790961 Total blocks: 65856, missing
> metadata files:0, missing block files:0, missing blocks in memory:0,
> mismatched blocks:0
> 2015-07-28 16:00:16,770 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving
> BP-439084760-10.32.0.180-1387281790961:blk_1075311715_1574451 src: /
> 10.32.1.12:36998 dest: /10.32.1.12:50010
> 2015-07-28 16:00:17,469 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /
> 10.32.1.12:36150, dest: /10.32.1.12:50010, bytes: 32688, op: HDFS_WRITE,
> cliID: DFSClient_hb_rs_hbase-rs5,60020,1438088401479_1146354759_35, offset:
> 0, srvID: 6c25ffd4-3dc7-4e3a-af56-5cc8aa9220e0, blockid:
> BP-439084760-10.32.0.180-1387281790961:blk_1075311706_1574442, duration:
> 3601152263901
> 2015-07-28 16:00:17,472 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder:
> BP-439084760-10.32.0.180-1387281790961:blk_1075311706_1574442,
> type=HAS_DOWNSTREAM_IN_PIPELINE terminating
> 2015-07-28 16:03:44,011 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving
> BP-439084760-10.32.0.180-1387281790961:blk_1075311716_1574452 src: /
> 10.0.0.19:35851 dest: /10.32.1.12:50010
> 2015-07-28 16:03:44,169 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /
> 10.0.0.20:40176, dest: /10.32.1.12:50010, bytes: 316062, op: HDFS_WRITE,
> cliID: DFSClient_hb_rs_hbase-rs1,60020,1438092204868_-99326843_35, offset:
> 0, srvID: 6c25ffd4-3dc7-4e3a-af56-5cc8aa9220e0, blockid:
> BP-439084760-10.32.0.180-1387281790961:blk_1075311707_1574443, duration:
> 3600482062810
> 2015-07-28 16:03:44,169 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: PacketResponder:
> BP-439084760-10.32.0.180-1387281790961:blk_1075311707_1574443,
> type=LAST_IN_PIPELINE, downstreams=0:[] terminating
> 2015-07-28 16:11:10,961 WARN
> org.apache.hadoop.hdfs.server.datanode.DataNode: Slow BlockReceiver write
> data to disk cost:7884ms (threshold=300ms)
> 2015-07-28 16:11:14,122 WARN
> org.apache.hadoop.hdfs.server.datanode.DataNode: Slow BlockReceiver write
> data to disk cost:4362ms (threshold=300ms)
> 2015-07-28 16:11:14,123 WARN
> org.apache.hadoop.hdfs.server.datanode.DataNode: Slow flushOrSync took
> 3160ms (threshold=300ms), isSync:false, flushTotalNanos=3160364203ns
> 2015-07-28 16:13:29,968 WARN
> org.apache.hadoop.hdfs.server.datanode.DataNode: Slow BlockReceiver write
> data to disk cost:659ms (threshold=300ms)
> 2015-07-28 16:18:33,336 INFO
> org.apache.hadoop.hdfs.server.datanode.DataNode: Receiving
> BP-439084760-10.32.0.180-1387281790961:blk_1075311717_1574453 src: /
> 10.0.0.20:41527 dest: /10.32.1.12:50010
> 2015-07-28 16:18:38,926 WARN
> org.apache.hadoop.hdfs.server.datanode.DataNode: Slow BlockReceiver write
> data to disk cost:1767ms (threshold=300ms)
> 2015-07-28 16:28:40,580 WARN
> org.apache.hadoop.hdfs.server.datanode.DataNode: Slow BlockReceiver write
> data to disk cost:4099ms (threshold=300ms)
>
> What could be the cause of this?
> Thank you.
>
>
>

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