[jira] [Created] (HBASE-9025) Thread safety issue in MetaScanner

[Lars Hofhansl (JIRA)]

Lars Hofhansl created HBASE-9025:
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             Summary: Thread safety issue in MetaScanner
                 Key: HBASE-9025
                 URL: https://issues.apache.org/jira/browse/HBASE-9025
             Project: HBase
          Issue Type: Bug
    Affects Versions: 0.94.9
            Reporter: Lars Hofhansl


I just saw this in a test run in 0.94:

{code}
Stacktrace

java.lang.NullPointerException
        at java.util.TreeMap.getEntry(TreeMap.java:324)
        at java.util.TreeMap.get(TreeMap.java:255)
        at 
org.apache.hadoop.hbase.util.TestHBaseFsck.testSplitDaughtersNotInMeta(TestHBaseFsck.java:1346)
...
{code}

The TreeMap in question here is actually returned from 
{{HTable.getRegionLocations()}}, which in turns calls 
{{MetaScanner.allTableRegions(getConfiguration(), getTableName(), false);}}

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