so, datanode log shows no errors whatsoever, however I do see same blocks fetched repeatedly, and the network speed is quite high, but I am unable to load _some_ regions, what could it be?
2010-09-24 16:38:42,729 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /10.101.6.2:50010, dest: /10.101.6.2:53038, bytes: 914, op: HDFS_READ, cliID: DFSClient_hb_rs_rdaf2.prod.imageshack.com,60020,1285371202189_1285371202237, offset: 13803520, srvID: DS-1363732508-10.101.6.2-50010-1284520709569, blockid: blk_5556468858269577961_1550101, duration: 127413 2010-09-24 16:38:44,317 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /10.101.6.2:50010, dest: /10.101.6.2:53048, bytes: 110, op: HDFS_READ, cliID: DFSClient_hb_rs_rdaf2.prod.imageshack.com,60020,1285371202189_1285371202237, offset: 32723968, srvID: DS-1363732508-10.101.6.2-50010-1284520709569, blockid: blk_364673737339632029_1347910, duration: 1140653 2010-09-24 16:38:44,318 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /10.101.6.2:50010, dest: /10.101.6.2:53049, bytes: 38294, op: HDFS_READ, cliID: DFSClient_hb_rs_rdaf2.prod.imageshack.com,60020,1285371202189_1285371202237, offset: 32686080, srvID: DS-1363732508-10.101.6.2-50010-1284520709569, blockid: blk_364673737339632029_1347910, duration: 691929 2010-09-24 16:38:44,510 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /10.101.6.2:50010, dest: /10.101.6.2:53054, bytes: 18021300, op: HDFS_READ, cliID: DFSClient_hb_rs_rdaf2.prod.imageshack.com,60020,1285371202189_1285371202237, offset: 0, srvID: DS-1363732508-10.101.6.2-50010-1284520709569, blockid: blk_-3781179144642915580_1571141, duration: 173548261 2010-09-24 16:38:44,525 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /10.101.6.2:50010, dest: /10.101.6.2:53055, bytes: 506, op: HDFS_READ, cliID: DFSClient_hb_rs_rdaf2.prod.imageshack.com,60020,1285371202189_1285371202237, offset: 48700928, srvID: DS-1363732508-10.101.6.2-50010-1284520709569, blockid: blk_-176750251227749356_1535293, duration: 77045 2010-09-24 16:38:44,526 INFO org.apache.hadoop.hdfs.server.datanode.DataNode.clienttrace: src: /10.101.6.2:50010, dest: /10.101.6.2:53056, bytes: 6182, op: HDFS_READ, cliID: DFSClient_hb_rs_rdaf2.prod.imageshack.com,60020,1285371202189_1285371202237, offset: 48695296, srvID: DS-1363732508-10.101.6.2-50010-1284520709569, blockid: blk_-176750251227749356_1535293, duration: 128270 On Fri, Sep 24, 2010 at 4:32 PM, Stack <[email protected]> wrote: > (Good one Ryan) > > Master is doing the assigning. It needs to be restarted to see the > config change. > > St.Ack > > On Fri, Sep 24, 2010 at 4:28 PM, Jack Levin <[email protected]> wrote: >> Only regionserver, do I need to restart both? >> >> -jack >> >> On Fri, Sep 24, 2010 at 4:22 PM, Ryan Rawson <[email protected]> wrote: >>> Did you restart the master and the regionserver? Or just one or the other? >>> >>> -ryan >>> >>> On Fri, Sep 24, 2010 at 4:21 PM, Jack Levin <[email protected]> wrote: >>>> Also, even with '1' value, I see: >>>> >>>> 2010-09-24 16:20:29,983 INFO >>>> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN: >>>> img834,1000351n.jpg,1285251664421.d09510a16c0cfd0d8a251a36229125e0. >>>> 2010-09-24 16:20:29,984 INFO >>>> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN: >>>> img651,pict1408.jpg,1285018965749.110871465 >>>> 2010-09-24 16:20:29,984 INFO >>>> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN: >>>> img806,sam0084a.jpg,1285324613056.82a1e8ba8d2a37a591a847fb36803c45. >>>> 2010-09-24 16:20:29,985 INFO >>>> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN: >>>> img535,screenshot1bt.png,1285323376435.fae5f3ab474196c99f10b8a936fb9ead. >>>> 2010-09-24 16:20:29,985 INFO >>>> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN: >>>> img838,123468.jpg,1285223690165.a2903008621d1a6b6ca02441bf3b68ea. >>>> 2010-09-24 16:20:29,985 INFO >>>> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN: >>>> img839,yug.jpg,1285230318537.c09323dbaf54130671df2a14d671fe25. >>>> 2010-09-24 16:20:29,985 INFO >>>> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN: >>>> img821,vlcsnap78737.png,1285283076812.ea4973ce6e43d7f974613c5989647278. >>>> 2010-09-24 16:20:29,985 INFO >>>> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN: >>>> img805,njt30scbkdmb.gif,1285322429401.f9aacdafd8064bfbcc8cd4f6930febbe. >>>> 2010-09-24 16:20:29,985 INFO >>>> org.apache.hadoop.hbase.regionserver.HRegionServer: MSG_REGION_OPEN: >>>> img94,img1711m.jpg,1285016850260.1424182007 >>>> 2010-09-24 16:20:29,986 DEBUG >>>> org.apache.hadoop.hbase.regionserver.HRegion: Creating region >>>> img840,kitbarca2.png,1285189312696.1ce170ec09384fca51297a5fe7aeb4af. >>>> >>>> Which is pretty close to concurrent. >>>> >>>> -Jack >>>> >>>> On Fri, Sep 24, 2010 at 4:16 PM, Jack Levin <[email protected]> wrote: >>>>> Still having a problem: >>>>> >>>>> 2010-09-24 16:15:02,572 ERROR >>>>> org.apache.hadoop.hbase.regionserver.HRegionServer: Error opening >>>>> img695,p1908101232.jpg,1285288492084.d451f05024b42f71a115951c62cdcccf. >>>>> java.io.EOFException >>>>> at java.io.DataInputStream.readFully(DataInputStream.java:180) >>>>> at >>>>> org.apache.hadoop.io.DataOutputBuffer$Buffer.write(DataOutputBuffer.java:63) >>>>> at >>>>> org.apache.hadoop.io.DataOutputBuffer.write(DataOutputBuffer.java:101) >>>>> at >>>>> org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1937) >>>>> at >>>>> org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1837) >>>>> >>>>> >>>>> I changed the value to '1', and restarted the regionserver... Note >>>>> that my hdfs is not having a problem. >>>>> >>>>> -Jack >>>>> >>>>> On Fri, Sep 24, 2010 at 4:01 PM, Stack <[email protected]> wrote: >>>>>> Try >>>>>> >>>>>> <property> >>>>>> <name>hbase.regions.percheckin</name> >>>>>> <value>10</value> >>>>>> <description>Maximum number of regions that can be assigned in a >>>>>> single go >>>>>> to a region server. >>>>>> </description> >>>>>> </property> >>>>>> >>>>>> What do you have now? Whatever it is, go down from there. >>>>>> >>>>>> St.Ack >>>>>> >>>>>> >>>>>> On Fri, Sep 24, 2010 at 3:07 PM, Jack Levin <[email protected]> wrote: >>>>>>> My regions are 1gb in size and when I cold start the cluster I >>>>>>> oversaturate my network links (1000 mbps) and get client dfs timeouts , >>>>>>> anyway to slow the m down? >>>>>>> >>>>>>> -Jack >>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >
