[
https://issues.apache.org/jira/browse/HBASE-19567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
stack resolved HBASE-19567.
---------------------------
Resolution: Fixed
Pushed Ram's one-liner to master and branch-2.
> ClassNotFoundException: org.apache.hadoop.hbase.KeyValue$RawBytesComparator
> starting 2.0.0 over a 0.98.25 data.
> ---------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-19567
> URL: https://issues.apache.org/jira/browse/HBASE-19567
> Project: HBase
> Issue Type: Sub-task
> Components: HFile
> Reporter: stack
> Assignee: stack
> Fix For: 2.0.0-beta-1
>
> Attachments: 19567.patch
>
>
> Starting branch-2 over a 0.98.25 data:
> 382603 2017-12-19 21:25:08,333 DEBUG
> [StoreOpener-8e6e2b71d8a413561d9103b0cb6e4686-1] regionserver.HStore: loaded
> hdfs://ve0524.halxg.cloudera.com:8020/hbase/data/default/ycsb/8e6e2b71d8a413561d9103b0cb6e4686/family/3633fe2e03ad4cceb0d2018f1f0d76da,
> isReference=false, isBulkLoadResult=false, seqid=341101 6,
> majorCompaction=false
> 382604 2017-12-19 21:25:08,339 DEBUG [StoreFileOpenerThread-family-1]
> hfile.HFile: Opening HFile v2 with v3 reader
> 382605 2017-12-19 21:25:08,342 ERROR [StoreFileOpenerThread-family-1]
> regionserver.StoreFileReader: Error reading bloom filter meta for
> GENERAL_BLOOM_META -- proceeding without
> 382606 java.io.IOException: java.lang.ClassNotFoundException:
> org.apache.hadoop.hbase.KeyValue$RawBytesComparator
> 382607 at
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass(FixedFileTrailer.java:583)
> 382608 at
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.createComparator(FixedFileTrailer.java:592)
> 382609 at
> org.apache.hadoop.hbase.io.hfile.CompoundBloomFilter.<init>(CompoundBloomFilter.java:79)
> 382610 at
> org.apache.hadoop.hbase.util.BloomFilterFactory.createFromMeta(BloomFilterFactory.java:104)
> 382611 at
> org.apache.hadoop.hbase.regionserver.StoreFileReader.loadBloomfilter(StoreFileReader.java:480)
> 382612 at
> org.apache.hadoop.hbase.regionserver.HStoreFile.open(HStoreFile.java:426)
> 382613 at
> org.apache.hadoop.hbase.regionserver.HStoreFile.initReader(HStoreFile.java:461)
> 382614 at
> org.apache.hadoop.hbase.regionserver.HStore.createStoreFileAndReader(HStore.java:665)
> 382615 at
> org.apache.hadoop.hbase.regionserver.HStore.lambda$openStoreFiles$0(HStore.java:533)
> 382616 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> 382617 at
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> 382618 at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> 382619 at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> 382620 at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> 382621 at java.lang.Thread.run(Thread.java:745)
> 382622 Caused by: java.lang.ClassNotFoundException:
> org.apache.hadoop.hbase.KeyValue$RawBytesComparator
> 382623 at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> 382624 at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> 382625 at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
> 382626 at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> 382627 at java.lang.Class.forName0(Native Method)
> 382628 at java.lang.Class.forName(Class.java:264)
> 382629 at
> org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass(FixedFileTrailer.java:581)
> 382630 ... 14 more
> Ram suggested a one-liner. I tried it and it seems to work.
> diff --git
> a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.java
>
> b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.java
> index 672919d..1a22cd6 100644
> ---
> a/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.java
> +++
> b/hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/FixedFileTrailer.java
> @@ -570,7 +570,7 @@ public class FixedFileTrailer {
> || (comparatorClassName
>
> .equals("org.apache.hadoop.hbase.CellComparator$MetaCellComparator"))) {
> comparatorKlass = MetaCellComparator.class;
> - } else if
> (comparatorClassName.equals("org.apache.hadoop.hbase.KeyValue.RawBytesComparator")
> + } else if
> (comparatorClassName.equals("org.apache.hadoop.hbase.KeyValue$RawBytesComparator")
> ||
> comparatorClassName.equals("org.apache.hadoop.hbase.util.Bytes$ByteArrayComparator"))
> {
> // When the comparator to be used is Bytes.BYTES_RAWCOMPARATOR, we
> just return null from here
> // Bytes.BYTES_RAWCOMPARATOR is not a CellComparator
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