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Anoop Sam John commented on HBASE-16189: ---------------------------------------- So a cluster RS is 2.0 and then wrote some files and then reverted back to 1.x. ? > [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 > Components: migration > 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} -- This message was sent by Atlassian JIRA (v6.3.4#6332)