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https://issues.apache.org/jira/browse/HBASE-16189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15728315#comment-15728315
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Anoop Sam John commented on HBASE-16189:
----------------------------------------
This issue came up again in the dev@ discussion thread. We fixed this in later
versions of 1.x means when rolling upgrade done to 2.0, first users have to
upgrade to some 1.x versions which is having this fix and then to 2.0.. What
do you guys think? Whether we should avoid this kind of indirection?
cc [~enis], [[email protected]], [~tedyu], [~mbertozzi]
> [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
> Assignee: ramkrishna.s.vasudevan
> Priority: Critical
> Fix For: 1.3.0, 1.4.0, 1.1.6, 1.2.3
>
> Attachments: HBASE-16189.branch-1.patch, HBASE-16189.patch,
> HBASE-16189_branch-1.patch
>
>
> 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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