No, no encoding.
On Wed, Apr 17, 2013 at 6:56 PM, ramkrishna vasudevan < [email protected]> wrote: > @Lars > You have any suggestions on this? > > @Amit > You have any Encoder enabled like the Prefix Encoding stuff? > There was one optimization added recently but that is not in 0.94.2 > > Regards > Ram > > > On Wed, Apr 17, 2013 at 5:17 PM, Amit Sela <[email protected]> wrote: > > > I scanned over this counter with and without column specification and all > > looks OK now. > > I have no CPs in this table. > > Is there some kind of a hint mechanism in HBase' internal scan ? because > > it's weird that ScanWildcardColumnTracker.checkColumn says that column is > > smaller than previous column: *imprersions_ALL_2013041617*. there is no > > imprersions only impressions and r is indeed smaller than s, could it be > > some kind of hint bug ? I don't think I know enough of HBase internals to > > fully understand that... > > > > > > > > On Wed, Apr 17, 2013 at 1:42 PM, ramkrishna vasudevan < > > [email protected]> wrote: > > > > > Hi Amit > > > > > > Checking the code this is possible when the qualifiers are not sorted. > > Do > > > you have any CPs in your path which tries to play with the KVs? > > > > > > Seems to be a very weird thing. > > > Can you try doing a scan on the KV just before this happens. That will > > tel > > > you the existing kvs that are present. > > > > > > Even now if you can have the cluster you can try scanning for the > region > > > for which the flush happened. That will give us some more info. > > > > > > Regards > > > Ram > > > > > > > > > On Wed, Apr 17, 2013 at 2:36 PM, Amit Sela <[email protected]> > wrote: > > > > > > > The cluster runs Hadoop 1.0.4 and HBase 0.94.2 > > > > > > > > I have three families in this table: weekly, daily, hourly. each > family > > > has > > > > the following qualifiers: > > > > Weekly - impressions_{countrycode}_{week#} - country code is 0, 1 or > > ALL > > > > (aggregation of both 0 and 1) > > > > Daily and hourly are the same but with yyyyMMdd and yyyyMMddhh > > > > respectively. > > > > > > > > Just before the exception the regionserver StoreFile executes the > > > > following: > > > > > > > > 2013-04-16 17:56:06,769 [regionserver8041.cacheFlusher] INFO > > > > org.apache.hadoop.hbase.regionserver.StoreFile: Delete Family Bloom > > > filter > > > > type for hdfs:// > > > > hadoop-master.infolinks.com:8000/hbase/URL_COUNTERS/af2760e > > > > 4d04a9e3025d1fb53bdba8acf/.tmp/dc4ce516887f4e0bbaf6201d69ba90bc: > > > > CompoundBloomFilterWriter > > > > 2013-04-16 17:56:07,331 [regionserver8041.cacheFlusher] INFO > > > > org.apache.hadoop.hbase.regionserver.StoreFile: NO General Bloom and > NO > > > > DeleteFamily was added to HFile > (hdfs://hbase-master-address:8000/hbase > > > > /URL_COUNTERS/*af2760e4d04a9e3025d1fb53bdba8acf* > > > > /.tmp/dc4ce516887f4e0bbaf6201d69ba90bc) > > > > 2013-04-16 17:56:07,331 [regionserver8041.cacheFlusher] INFO > > > > org.apache.hadoop.hbase.regionserver.Store: Flushed , > > > sequenceid=210517246, > > > > memsize=39.3m, into tmp file hdfs://hbase-master:8000/hbase > > > > /URL_COUNTERS/*af2760e4d04a9e3025d1fb53bdba8acf* > > > > /.tmp/dc4ce516887f4e0bbaf6201d69ba90bc > > > > 2013-04-16 17:56:07,357 [regionserver8041.cacheFlusher] INFO > > > > org.apache.hadoop.hbase.regionserver.StoreFile: Delete Family Bloom > > > filter > > > > type for hdfs://hbase-master:8000/hbase/URL_COUNTERS/*af2760e* > > > > *4d04a9e3025d1fb53bdba8acf*/.tmp/3fa7993dcb294be1bca5e4d7357f4003: > > > > CompoundBloomFilterWriter > > > > 2013-04-16 17:56:07,608 [regionserver8041.cacheFlusher] INFO > > > > org.apache.hadoop.hbase.regionserver.StoreFile: NO General Bloom and > NO > > > > DeleteFamily was added to HFile (hdfs://hbase-master:8000/hbase > > > > /URL_COUNTERS/*af2760e4d04a9e3025d1fb53bdba8acf* > > > > /.tmp/3fa7993dcb294be1bca5e4d7357f4003) > > > > 2013-04-16 17:56:07,608 [regionserver8041.cacheFlusher] FATAL > > > > org.apache.hadoop.hbase.regionserver.HRegionServer: ABORTING region > > > server > > > > region-server-address,8041,1364993168088: Replay of HLog required > > > > . Forcing server shutdown > > > > DroppedSnapshotException: region: TABLE,ROWKEY,1364317591568.* > > > > af2760e4d04a9e3025d1fb53bdba8acf*. > > > > .... > > > > .... > > > > ... > > > > > > > > > > > > On Wed, Apr 17, 2013 at 11:47 AM, ramkrishna vasudevan < > > > > [email protected]> wrote: > > > > > > > > > Seems interesting. Can you tell us what are the families and the > > > > > qualifiers available in your schema. > > > > > > > > > > Any other interesting logs that you can see before this? > > > > > > > > > > BTW the version of HBase is also needed? If we can track it out we > > can > > > > > then file a JIRA if it is a bug. > > > > > > > > > > Regards > > > > > RAm > > > > > > > > > > > > > > > On Wed, Apr 17, 2013 at 2:00 PM, Amit Sela <[email protected]> > > > wrote: > > > > > > > > > > > Hi all, > > > > > > > > > > > > I had a regionserver crushed during counters increment. Looking > at > > > the > > > > > > regionserver log I saw: > > > > > > > > > > > > org.apache.hadoop.hbase.DroppedSnapshotException: region: > > TABLE_NAME, > > > > > > ROW_KEY...at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1472) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1351) > > > > > > at > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:1292) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:406) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:380) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.MemStoreFlusher.run(MemStoreFlusher.java:243) > > > > > > at java.lang.Thread.run(Thread.java:722) > > > > > > Caused by: java.io.IOException: > > ScanWildcardColumnTracker.checkColumn > > > > ran > > > > > > into a column actually smaller than the previous column: > > *QUALIFIER* > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.ScanWildcardColumnTracker.checkColumn(ScanWildcardColumnTracker.java:104) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.ScanQueryMatcher.match(ScanQueryMatcher.java:354) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:362) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.StoreScanner.next(StoreScanner.java:311) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.Store.internalFlushCache(Store.java:738) > > > > > > at > > > > > > > > org.apache.hadoop.hbase.regionserver.Store.flushCache(Store.java:673) > > > > > > at > > > > > > > > org.apache.hadoop.hbase.regionserver.Store.access$400(Store.java:108) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.Store$StoreFlusherImpl.flushCache(Store.java:2276) > > > > > > at > > > > > > > > > > > > > > > > > > > > > > > > > > > org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:1447) > > > > > > > > > > > > The strange thing is that the *QUALIFER* name as it appears in > the > > > log > > > > is > > > > > > misspelled.... there is no, and never was such qualifier name. > > > > > > > > > > > > Thanks, > > > > > > > > > > > > Amit. > > > > > > > > > > > > > > > > > > > > >
