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https://issues.apache.org/jira/browse/HBASE-7135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13639580#comment-13639580
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stack commented on HBASE-7135:
------------------------------
[~zjushch] Can you say anything more about why this issue happened. Fix seems
fine but how you think it was incorrectly serialized in the first place?
> Serializing hfileBlcok is incorrect for SlabCache
> -------------------------------------------------
>
> Key: HBASE-7135
> URL: https://issues.apache.org/jira/browse/HBASE-7135
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.2
> Reporter: chunhui shen
> Assignee: chunhui shen
> Fix For: 0.95.1
>
> Attachments: HBASE-7135.patch, HBASE-7135v2.patch
>
>
> 2012-11-07 08:35:36,082 ERROR
> org.apache.hadoop.hbase.io.hfile.slab.SingleSizeCache: Deserializer threw an
> exception. This may indicate a bug.
> java.io.IOException: Invalid HFile block magic:
> \x00\x00\x00\x00\x00\x00\x00\x00
> at org.apache.hadoop.hbase.io.hfile.BlockType.parse(BlockType.java:153)
> at org.apache.hadoop.hbase.io.hfile.BlockType.read(BlockType.java:164)
> at org.apache.hadoop.hbase.io.hfile.HFileBlock.<init>(HFileBlock.java:254)
> at
> org.apache.hadoop.hbase.io.hfile.HFileBlock$1.deserialize(HFileBlock.java:148)
> at
> org.apache.hadoop.hbase.io.hfile.HFileBlock$1.deserialize(HFileBlock.java:140)
> at
> org.apache.hadoop.hbase.io.hfile.slab.SingleSizeCache.getBlock(SingleSizeCache.java:166)
> at
> org.apache.hadoop.hbase.io.hfile.slab.SlabCache.getBlock(SlabCache.java:245)
> at
> org.apache.hadoop.hbase.io.hfile.DoubleBlockCache.getBlock(DoubleBlockCache.java:100)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2.getBlockFromCache(HFileReaderV2.java:267)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock(HFileReaderV2.java:349)
> at
> org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$BlockIndexReader.loadDataBlockWithScanInfo(HFileBlockIndex.java:257)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:498)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:522)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.seekAtOrAfter(StoreFileScanner.java:226)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.seek(StoreFileScanner.java:145)
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