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https://issues.apache.org/jira/browse/HBASE-17031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15652044#comment-15652044
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Ashu Pachauri commented on HBASE-17031:
---------------------------------------
[~ashish singhi] Thanks for pointing it out. I'll mark it as a duplicate and
put my comments on HBASE-16498.
> Scanners should check for null start and end rows
> -------------------------------------------------
>
> Key: HBASE-17031
> URL: https://issues.apache.org/jira/browse/HBASE-17031
> Project: HBase
> Issue Type: Bug
> Components: Scanners
> Reporter: Ashu Pachauri
> Priority: Minor
>
> If a scan is passed with a null start row, it fails very deep in the call
> stack. We should validate start and end rows for not null before launching
> the scan.
> Here is the associated jstack:
> {code}
> java.lang.RuntimeException: java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:219)
> at
> org.apache.hadoop.hbase.client.ClientScanner.call(ClientScanner.java:326)
> at
> org.apache.hadoop.hbase.client.ClientScanner.nextScanner(ClientScanner.java:301)
> at
> org.apache.hadoop.hbase.client.ClientScanner.initializeScannerInConstruction(ClientScanner.java:166)
> at
> org.apache.hadoop.hbase.client.ClientScanner.<init>(ClientScanner.java:161)
> at org.apache.hadoop.hbase.client.HTable.getScanner(HTable.java:798)
> Caused by: java.lang.NullPointerException
> at org.apache.hadoop.hbase.util.Bytes.compareTo(Bytes.java:1225)
> at
> org.apache.hadoop.hbase.util.Bytes$ByteArrayComparator.compare(Bytes.java:158)
> at
> org.apache.hadoop.hbase.util.Bytes$ByteArrayComparator.compare(Bytes.java:147)
> at
> org.apache.hadoop.hbase.types.CopyOnWriteArrayMap$ArrayHolder.find(CopyOnWriteArrayMap.java:892)
> at
> org.apache.hadoop.hbase.types.CopyOnWriteArrayMap.floorEntry(CopyOnWriteArrayMap.java:169)
> at
> org.apache.hadoop.hbase.client.MetaCache.getCachedLocation(MetaCache.java:79)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getCachedLocation(ConnectionManager.java:1391)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1231)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1183)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCallerWithReadReplicas.getRegionLocations(RpcRetryingCallerWithReadReplicas.java:305)
> at
> org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:156)
> at
> org.apache.hadoop.hbase.client.ScannerCallableWithReplicas.call(ScannerCallableWithReplicas.java:60)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:211)
> ... 30 more
> {code}
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