@Ted Does your version have this fix https://issues.apache.org/jira/browse/HBASE-16189
Regards Ram On Tue, Dec 6, 2016 at 3:56 PM, Ted Yu <[email protected]> wrote: > Is the assumption that hbase:meta would not split ? > > In other thread, Francis Liu was proposing supporting splittable > hbase:meta in 2.0 release. > > Cheers > > > On Dec 6, 2016, at 2:20 AM, 张铎 <[email protected]> wrote: > > > > Could this be solved by hosting meta only on master? > > > > BTW, MetaCellComparator is introduced in HBASE-10800. > > > > Thanks. > > > > 2016-12-06 17:44 GMT+08:00 Ted Yu <[email protected]>: > > > >> Hi, > >> When I restarted a cluster with 1.1 , I found that hbase:meta region > >> (written to by the previously deployed 2.0) couldn't be opened: > >> > >> Caused by: java.io.IOException: > >> org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem reading > >> HFile Trailer from file hdfs://yz1.xx.com:8020/apps/ hbase/data/data/ > >> hbase/meta/1588230740/info/599fc8a37311414e876803312009a986 > >> at > >> org.apache.hadoop.hbase.regionserver.HStore.openStoreFiles(HStore.java: > >> 579) > >> at > >> org.apache.hadoop.hbase.regionserver.HStore.loadStoreFiles(HStore.java: > >> 534) > >> at > >> org.apache.hadoop.hbase.regionserver.HStore.<init>(HStore.java:275) > >> at > >> org.apache.hadoop.hbase.regionserver.HRegion.instantiateHStore(HRegion. > >> java:5150) > >> at > >> org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:912) > >> at > >> org.apache.hadoop.hbase.regionserver.HRegion$1.call(HRegion.java:909) > >> at java.util.concurrent.FutureTask.run(FutureTask.java:266) > >> at > >> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > >> at java.util.concurrent.FutureTask.run(FutureTask.java:266) > >> ... 3 more > >> Caused by: org.apache.hadoop.hbase.io.hfile.CorruptHFileException: > Problem > >> reading HFile Trailer from file hdfs:// > >> yz1.xx.com:8020/apps/hbase/data/data/hbase/ meta/1588230740/ > >> info/599fc8a37311414e876803312009a986 > >> at > >> org.apache.hadoop.hbase.io.hfile.HFile.pickReaderVersion( > HFile.java:483) > >> at > >> org.apache.hadoop.hbase.io.hfile.HFile.createReader(HFile.java:511) > >> at > >> org.apache.hadoop.hbase.regionserver.StoreFile$Reader. > >> <init>(StoreFile.java:1128) > >> at > >> org.apache.hadoop.hbase.regionserver.StoreFileInfo. > >> open(StoreFileInfo.java:267) > >> at > >> org.apache.hadoop.hbase.regionserver.StoreFile.open(StoreFile.java:409) > >> at > >> org.apache.hadoop.hbase.regionserver.StoreFile. > >> createReader(StoreFile.java:517) > >> at > >> org.apache.hadoop.hbase.regionserver.HStore.createStoreFileAndReader( > >> HStore.java:687) > >> at > >> org.apache.hadoop.hbase.regionserver.HStore.access$000(HStore.java:130) > >> at > >> org.apache.hadoop.hbase.regionserver.HStore$1.call(HStore.java:554) > >> at > >> org.apache.hadoop.hbase.regionserver.HStore$1.call(HStore.java:551) > >> ... 6 more > >> Caused by: java.io.IOException: java.lang.ClassNotFoundException: > >> org.apache.hadoop.hbase.CellComparator$MetaCellComparator > >> at > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass( > >> FixedFileTrailer.java:581) > >> at > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.deserializeFromPB( > >> FixedFileTrailer.java:300) > >> at > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer. > >> deserialize(FixedFileTrailer.java:242) > >> at > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.readFromStream( > >> FixedFileTrailer.java:407) > >> at > >> org.apache.hadoop.hbase.io.hfile.HFile.pickReaderVersion( > HFile.java:468) > >> ... 15 more > >> Caused by: java.lang.ClassNotFoundException: > >> org.apache.hadoop.hbase.CellComparator$MetaCellComparator > >> at java.net.URLClassLoader.findClass(URLClassLoader.java:381) > >> at java.lang.ClassLoader.loadClass(ClassLoader.java:424) > >> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331) > >> at java.lang.ClassLoader.loadClass(ClassLoader.java:357) > >> at java.lang.Class.forName0(Native Method) > >> at java.lang.Class.forName(Class.java:264) > >> at > >> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass( > >> FixedFileTrailer.java:579) > >> > >> When user does rolling upgrade from 1.1 to 2.0, the above may cause > problem > >> if hbase:meta region is updated by server running 2.0 but later > assigned to > >> a region server which still runs 1.1 (due to crash of the server running > >> 2.0, e.g.) > >> > >> I want to get community feedback on the severity of this issue. > >> > >> Thanks > >> >
