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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-16189) [Rolling Upgrade] 2.0 hfiles cannot be opened by 1.x servers
Date Wed, 06 Jul 2016 19:15:11 GMT
Enis Soztutar created HBASE-16189:
-------------------------------------

             Summary: [Rolling Upgrade] 2.0 hfiles cannot be opened by 1.x servers
                 Key: HBASE-16189
                 URL: https://issues.apache.org/jira/browse/HBASE-16189
             Project: HBase
          Issue Type: Sub-task
            Reporter: Enis Soztutar
            Priority: Critical
             Fix For: 2.0.0


HBASE-10800 added MetaCellComparator, which gets written to the HFile. 1.x code does not have
the new class, hence fails to open the regions. I did not check whether this is only for meta
or for regular tables as well. 

{code}
Caused by: org.apache.hadoop.hbase.io.hfile.CorruptHFileException: Problem reading HFile Trailer
from file hdfs://cn017.l42scl.hortonworks.com:8020/apps/hbase/data/data/hbase/meta/1588230740/info/aa96e4ef463b4a82956330b236440437
        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:1123)
        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:512)
        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)
{code}



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