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Pankaj Kumar resolved HBASE-21525. ---------------------------------- Resolution: Duplicate Closing this as a duplicate of HBASE-16189 > java.io.IOException: java.lang.ClassNotFoundException: clone_snapshot from > hbase2.0.0 to hbase1.2.0 > ---------------------------------------------------------------------------------------------------- > > Key: HBASE-21525 > URL: https://issues.apache.org/jira/browse/HBASE-21525 > Project: HBase > Issue Type: Bug > Components: snapshots > Affects Versions: 1.2.0, 2.0.0 > Reporter: huan > Priority: Minor > > When I use > {code:java} > hbase org.apache.hadoop.hbase.snapshot.ExportSnapshot -snapshot > "wh_scan_issue_monitor_on_snap_1" -copy-from hdfs://xxxx:8020/hbase -copy-to > hdfs://xxx:8020/hbase > {code} > to copy snapshot from hbase2.0.0 to hbase 1.2.0 and then use > {code:java} > clone_snapshot > 'wh_scan_issue_monitor_on_snap_1',"wh_scan_issue_monitor_table"{code} > to restore the table; > There are no errors on client and hbase master. > but I can not scan any data in this new table. > So when I search the log in regionserver which that region running on .I find > the below error log > > {code:java} > 2018-11-29 13:39:45,826 ERROR > org.apache.hadoop.hbase.regionserver.StoreFile$Reader: Error reading bloom > filter meta for GENERAL_BLOOM_META -- proceeding without > java.io.IOException: java.lang.ClassNotFoundException: > at > org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.getComparatorClass(FixedFileTrailer.java:581) > at > org.apache.hadoop.hbase.io.hfile.FixedFileTrailer.createComparator(FixedFileTrailer.java:588) > at > org.apache.hadoop.hbase.util.CompoundBloomFilter.<init>(CompoundBloomFilter.java:73) > at > org.apache.hadoop.hbase.util.BloomFilterFactory.createFromMeta(BloomFilterFactory.java:109) > at > org.apache.hadoop.hbase.regionserver.StoreFile$Reader.loadBloomfilter(StoreFile.java:1469) > at > org.apache.hadoop.hbase.regionserver.StoreFile$Reader.access$000(StoreFile.java:1088) > at org.apache.hadoop.hbase.regionserver.StoreFile.open(StoreFile.java:465) > at > org.apache.hadoop.hbase.regionserver.StoreFile.createReader(StoreFile.java:509) > at > org.apache.hadoop.hbase.regionserver.StoreFile.createReader(StoreFile.java:499) > at > org.apache.hadoop.hbase.regionserver.HStore.createStoreFileAndReader(HStore.java:676) > at org.apache.hadoop.hbase.regionserver.HStore.access$000(HStore.java:119) > at org.apache.hadoop.hbase.regionserver.HStore$1.call(HStore.java:543) > at org.apache.hadoop.hbase.regionserver.HStore$1.call(HStore.java:540) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > at java.lang.Thread.run(Thread.java:748) > Caused by: java.lang.ClassNotFoundException: > 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:578) > ... 18 more > {code} > > > > -- This message was sent by Atlassian JIRA (v7.6.3#76005)