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https://issues.apache.org/jira/browse/HBASE-6048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13279052#comment-13279052
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stack commented on HBASE-6048:
------------------------------
I don't think this critical. Off-heap cache needs more work for it to be made
useable. Until that is done my guess is that few use this feature. This
feature is experimental still (How do we make this more clear)?
> Table Scan is failing if offheap cache enabled
> ----------------------------------------------
>
> Key: HBASE-6048
> URL: https://issues.apache.org/jira/browse/HBASE-6048
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.0
> Reporter: Gopinathan A
> Assignee: ramkrishna.s.vasudevan
> Priority: Critical
>
> Table Scan is failing if offheap cache enabled.
> {noformat}
> 2012-05-18 20:03:38,446 DEBUG org.apache.hadoop.hbase.io.hfile.HFileWriterV2:
> Initialized with CacheConfig:enabled [cacheDataOnRead=true]
> [cacheDataOnWrite=false] [cacheIndexesOnWrite=false]
> [cacheBloomsOnWrite=false] [cacheEvictOnClose=false] [cacheCompressed=false]
> 2012-05-18 20:03:38,446 INFO org.apache.hadoop.hbase.regionserver.StoreFile:
> Delete Family Bloom filter type for
> hdfs://10.18.40.217:9000/hbase/ufdr/1d4656fd417a07c9171a38b8f4d08510/.tmp/03742024b28f443bb63cfc338d4ca422:
> CompoundBloomFilterWriter
> 2012-05-18 20:04:25,576 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache:
> Block cache LRU eviction started; Attempting to free 120.57 MB of
> total=1020.57 MB
> 2012-05-18 20:04:25,655 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache:
> Block cache LRU eviction completed; freed=120.82 MB, total=907.89 MB,
> single=1012.11 MB, multi=6.12 MB, memory=0 KB
> 2012-05-18 20:04:25,733 ERROR
> org.apache.hadoop.hbase.regionserver.HRegionServer: Failed openScanner
> java.lang.IllegalStateException: Schema metrics requested before table/CF
> name initialization: {"tableName":"null","cfName":"null"}
> at
> org.apache.hadoop.hbase.regionserver.metrics.SchemaConfigured.getSchemaMetrics(SchemaConfigured.java:182)
> at
> org.apache.hadoop.hbase.io.hfile.LruBlockCache.updateSizeMetrics(LruBlockCache.java:310)
> at
> org.apache.hadoop.hbase.io.hfile.LruBlockCache.cacheBlock(LruBlockCache.java:274)
> at
> org.apache.hadoop.hbase.io.hfile.LruBlockCache.cacheBlock(LruBlockCache.java:293)
> at
> org.apache.hadoop.hbase.io.hfile.DoubleBlockCache.getBlock(DoubleBlockCache.java:102)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock(HFileReaderV2.java:296)
> at
> org.apache.hadoop.hbase.io.hfile.HFileBlockIndex$BlockIndexReader.seekToDataBlock(HFileBlockIndex.java:213)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:455)
> at
> org.apache.hadoop.hbase.io.hfile.HFileReaderV2$AbstractScannerV2.seekTo(HFileReaderV2.java:475)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.seekAtOrAfter(StoreFileScanner.java:226)
> at
> org.apache.hadoop.hbase.regionserver.StoreFileScanner.seek(StoreFileScanner.java:145)
> at
> org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:130)
> at
> org.apache.hadoop.hbase.regionserver.Store.getScanner(Store.java:2001)
> at
> org.apache.hadoop.hbase.regionserver.HRegion$RegionScannerImpl.<init>(HRegion.java:3274)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.instantiateRegionScanner(HRegion.java:1604)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1596)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1572)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.openScanner(HRegionServer.java:2310)
> at sun.reflect.GeneratedMethodAccessor45.invoke(Unknown Source)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.hadoop.hbase.ipc.WritableRpcEngine$Server.call(WritableRpcEngine.java:364)
> at
> org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1376)
> 2012-05-18 20:04:25,828 ERROR
> org.apache.hadoop.hbase.regionserver.HRegionServer: Failed openScanner
> {noformat}
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