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https://issues.apache.org/jira/browse/HBASE-3524?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12993328#comment-12993328
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ryan rawson commented on HBASE-3524:
------------------------------------
try this patch:
diff --git a/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
b/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
index d7e3ce3..519111a 100644
--- a/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
+++ b/src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
@@ -829,7 +829,10 @@ public class Store implements HeapSize {
if (filesToCompact.size() == 1) {
// Single file
StoreFile sf = filesToCompact.get(0);
- long oldest = now - sf.getReader().timeRangeTracker.minimumTimestamp;
+ long oldest =
+ (sf.getReader().timeRangeTracker == null) ?
+ Long.MIN_VALUE :
+ now - sf.getReader().timeRangeTracker.minimumTimestamp;
if (sf.isMajorCompaction() &&
(this.ttl == HConstants.FOREVER || oldest < this.ttl)) {
if (LOG.isDebugEnabled()) {
no test yet! doh!
> NPE from CompactionChecker
> --------------------------
>
> Key: HBASE-3524
> URL: https://issues.apache.org/jira/browse/HBASE-3524
> Project: HBase
> Issue Type: Bug
> Reporter: James Kennedy
> Fix For: 0.90.2
>
>
> I recently updated production data to use HBase 0.90.0.
> Now I'm periodically seeing:
> [10/02/11 17:23:27] 30076066 [mpactionChecker] ERROR
> nServer$MajorCompactionChecker - Caught exception
> java.lang.NullPointerException
> at
> org.apache.hadoop.hbase.regionserver.Store.isMajorCompaction(Store.java:832)
> at
> org.apache.hadoop.hbase.regionserver.Store.isMajorCompaction(Store.java:810)
> at
> org.apache.hadoop.hbase.regionserver.HRegion.isMajorCompaction(HRegion.java:2800)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer$MajorCompactionChecker.chore(HRegionServer.java:1047)
> at org.apache.hadoop.hbase.Chore.run(Chore.java:66)
> The only negative effect is that this is interrupting compactions from
> happening. But that is pretty serious and this might be a sign of data
> corruption?
> Maybe it's just my data, but this task should at least involve improving the
> handling to catch the NPE and still iterate through the other onlineRegions
> that might compact without error. The MajorCompactionChecker.chore() method
> only catches IOExceptions and so this NPE breaks out of that loop.
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