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https://issues.apache.org/jira/browse/HBASE-7135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13498173#comment-13498173
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ramkrishna.s.vasudevan commented on HBASE-7135:
-----------------------------------------------
I understand the patch a bit.
So previously the minorVersion was never persisted. Now we are persisting it
and retrieving it incase the version denotes to use Checksum or not?
So while deserialzing based on the minorVersion retrieved checksum usage can be
determined. Can someone else too review this who is more familiar with
hfileblock part?
> 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: 0.96.0
>
> 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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