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https://issues.apache.org/jira/browse/KYLIN-3499?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16647297#comment-16647297
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ASF GitHub Bot commented on KYLIN-3499:
---------------------------------------
shaofengshi closed pull request #198: KYLIN-3499 Update HBaseResourceStore.java
URL: https://github.com/apache/kylin/pull/198
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git
a/storage-hbase/src/main/java/org/apache/kylin/storage/hbase/HBaseResourceStore.java
b/storage-hbase/src/main/java/org/apache/kylin/storage/hbase/HBaseResourceStore.java
index 23df556beb..2c7494e0a7 100644
---
a/storage-hbase/src/main/java/org/apache/kylin/storage/hbase/HBaseResourceStore.java
+++
b/storage-hbase/src/main/java/org/apache/kylin/storage/hbase/HBaseResourceStore.java
@@ -44,6 +44,7 @@
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.Table;
+import org.apache.hadoop.hbase.client.RetriesExhaustedException;
import org.apache.hadoop.hbase.filter.CompareFilter;
import org.apache.hadoop.hbase.filter.Filter;
import org.apache.hadoop.hbase.filter.FilterList;
@@ -317,13 +318,20 @@ protected long checkAndPutResourceImpl(String resPath,
byte[] content, long oldT
byte[] bOldTS = oldTS == 0 ? null : Bytes.toBytes(oldTS);
Put put = buildPut(resPath, newTS, row, content, table);
- boolean ok = table.checkAndPut(row, B_FAMILY, B_COLUMN_TS, bOldTS,
put);
- logger.trace("Update row " + resPath + " from oldTs: " + oldTS +
", to newTs: " + newTS
- + ", operation result: " + ok);
- if (!ok) {
+ try {
+ boolean ok = table.checkAndPut(row, B_FAMILY, B_COLUMN_TS,
bOldTS, put);
+ logger.trace("Update row " + resPath + " from oldTs: " + oldTS
+ ", to newTs: " + newTS + ", operation result: " + ok);
+ if (!ok) {
+ long real = getResourceTimestampImpl(resPath);
+ throw new WriteConflictException(
+ "Overwriting conflict " + resPath + ", expect old
TS " + oldTS + ", but it is " + real);
+ }
+ } catch (RetriesExhaustedException e){
long real = getResourceTimestampImpl(resPath);
- throw new WriteConflictException(
- "Overwriting conflict " + resPath + ", expect old TS "
+ oldTS + ", but it is " + real);
+ // rpc timeout but resource has been already updated
+ if(newTS != real){
+ throw e;
+ }
}
return newTS;
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> resource inconsistent caused by hbase rpc timeout
> -------------------------------------------------
>
> Key: KYLIN-3499
> URL: https://issues.apache.org/jira/browse/KYLIN-3499
> Project: Kylin
> Issue Type: Bug
> Components: Storage - HBase
> Affects Versions: all
> Reporter: ulysses you
> Priority: Major
> Fix For: v2.6.0
>
> Attachments: ca7a61b2fdbfc321e7c896c3d34fd4d4c48e3eed.patch, error.png
>
>
> KYLIN use hbase to persist resouce metadata. When hbase rpc timeout, kylin
> would rollback the resource timestamp. It caused resource inconsistent
> between kylin's memory and hbase if hbase already put the resource.
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