[jira] [Updated] (HBASE-4325) Improve error message when using STARTROW for meta scans.

["Jonathan Hsieh (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-4325?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Hsieh updated HBASE-4325:
----------------------------------

          Component/s: shell
    Affects Version/s: 0.90.4
        Fix Version/s:     (was: 0.90.4)

> Improve error message when using STARTROW for meta scans.
> ---------------------------------------------------------
>
>                 Key: HBASE-4325
>                 URL: https://issues.apache.org/jira/browse/HBASE-4325
>             Project: HBase
>          Issue Type: Bug
>          Components: shell
>    Affects Versions: 0.90.4
>            Reporter: Jonathan Hsieh
>
> While in shell, when doing one of these:
> {code}
> get '.META.','table,d110818d237e63f-b236-4c89-a2c7-5f6342110818'
> scan '.META.', {LIMIT => 10 , STARTROW=>'table,d110818d3f72650-4a61-4352-ab49-707b42110818'}
> {code}
> The call fails with a cryptic message:
> {code}
> ERROR: org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server hp-node02.phx1.mozilla.com:60020 for region .META.,,1, row 'crash_reports,d110818d237e63f-b236-4c89-a2c7-5f6342110818', but failed after 7 attempts.
> Exceptions:
> java.io.IOException: java.io.IOException: java.lang.IllegalArgumentException: No 44 in <E9table,d110818d237e63f-b236-4c89-a2c7-5f6342110818��������>, length=43, offset=24
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:987)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:976)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:1632)
> 	at sun.reflect.GeneratedMethodAccessor30.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.HBaseRPC$Server.call(HBaseRPC.java:570)
> 	at org.apache.hadoop.hbase.ipc.HBaseServer$Handler.run(HBaseServer.java:1039)
> Caused by: java.lang.IllegalArgumentException: No 44 in <E9table,d110818d237e63f-b236-4c89-a2c7-5f6342110818��������>, length=43, offset=24
> 	at org.apache.hadoop.hbase.KeyValue.getRequiredDelimiterInReverse(KeyValue.java:1281)
> 	at org.apache.hadoop.hbase.KeyValue$MetaKeyComparator.compareRows(KeyValue.java:1827)
> 	at org.apache.hadoop.hbase.KeyValue$KeyComparator.compare(KeyValue.java:1866)
> 	at org.apache.hadoop.hbase.util.Bytes.binarySearch(Bytes.java:1159)
> 	at org.apache.hadoop.hbase.io.hfile.HFile$BlockIndex.blockContainingKey(HFile.java:1622)
> 	at org.apache.hadoop.hbase.io.hfile.HFile$Reader.blockContainingKey(HFile.java:918)
> 	at org.apache.hadoop.hbase.io.hfile.HFile$Reader$Scanner.seekTo(HFile.java:1300)
> 	at org.apache.hadoop.hbase.regionserver.StoreFileScanner.seekAtOrAfter(StoreFileScanner.java:136)
> 	at org.apache.hadoop.hbase.regionserver.StoreFileScanner.seek(StoreFileScanner.java:96)
> 	at org.apache.hadoop.hbase.regionserver.StoreScanner.<init>(StoreScanner.java:77)
> 	at org.apache.hadoop.hbase.regionserver.Store.getScanner(Store.java:1345)
> 	at org.apache.hadoop.hbase.regionserver.HRegion$RegionScanner.<init>(HRegion.java:2276)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.instantiateInternalScanner(HRegion.java:1131)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1123)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.getScanner(HRegion.java:1107)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:2998)
> 	at org.apache.hadoop.hbase.regionserver.HRegion.get(HRegion.java:2900)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:1630)
> 	... 5 more
> {code}
> Apparently the solution is to have the proper number of commas in the query.  
> {code}
> get '.META.','table,d110818d237e63f-b236-4c89-a2c7-5f6342110818,'
> scan '.META.', {LIMIT => 10 , STARTROW=>'table,d110818d3f72650-4a61-4352-ab49-707b42110818,'}
> {code}
> A better actionable error message should be reported.

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