huaxiang sun created HBASE-18247: ------------------------------------ Summary: Hbck to fix the case that replica region shows as key in the meta table Key: HBASE-18247 URL: https://issues.apache.org/jira/browse/HBASE-18247 Project: HBase Issue Type: Bug Affects Versions: 2.0.0-alpha-1 Reporter: huaxiang sun Assignee: huaxiang sun Priority: Minor
Recently, we run into one case with read replica, the replica region shows up as key in meta table (it is not supposed to happen, we are still working on why it showed up in the meta table). However, hbck always reported the error about the primary region. Please see the error attached. {code} test,92b0201b,1492546349354_0001.c3e6f235fe7caef75f8b0fb92a012da3. column=info:regioninfo, timestamp=1494958820573, value={ENCODED => c3e6f235fe7caef75f8b0fb92a012da3, NAME => 'test,92b0201b,1492546349354_0001.c3e6f235fe7caef75f8b0fb92a012da3.', STARTKEY => '92b0201b', ENDKEY => '92f1a952', REPLICA_ID => 1} ERROR: Region { meta => test,92b0201b,1492546349354.d2c637715f31a072f174e70d407fb458., hdfs => null, deployed => , replicaId => 0 } found in META, but not in HDFS or deployed on any region server. {code} Traced the code, in the following line, it does not consider the case that replicaId in regionInfo could be non-default. https://github.com/apache/hbase/blob/master/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java#L985 If it is changed to get replicaId from regionInfo, then hbck should be able to fix this by "-fixMeta". {code} diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java index 9eb5111..1649e53 100644 --- a/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java +++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/MetaTableAccessor.java @@ -982,7 +982,7 @@ public class MetaTableAccessor { List<HRegionLocation> locations = new ArrayList<>(1); NavigableMap<byte[],NavigableMap<byte[],byte[]>> familyMap = r.getNoVersionMap(); - locations.add(getRegionLocation(r, regionInfo, 0)); + locations.add(getRegionLocation(r, regionInfo, regionInfo.getReplicaId())); NavigableMap<byte[], byte[]> infoMap = familyMap.get(getCatalogFamily()); if (infoMap == null) return new RegionLocations(locations); {code} -- This message was sent by Atlassian JIRA (v6.4.14#64029)