[ https://issues.apache.org/jira/browse/HBASE-4351?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
ramkrishna.s.vasudevan updated HBASE-4351: ------------------------------------------ Attachment: HBASE-4351_1.patch > If from Admin we try to unassign a region forcefully, though a valid region > name is given the master is not able to identify the region to unassign. > ---------------------------------------------------------------------------------------------------------------------------------------------------- > > Key: HBASE-4351 > URL: https://issues.apache.org/jira/browse/HBASE-4351 > Project: HBase > Issue Type: Bug > Environment: Linux > Reporter: ramkrishna.s.vasudevan > Assignee: ramkrishna.s.vasudevan > Attachments: HBASE-4351.patch, HBASE-4351_1.patch > > > The following is the problem > Get the exact region name from UI and call > HBaseAdmin.unassign(regionname, true). > Here true is forceful option. > As part of unassign api > {code} > public void unassign(final byte [] regionName, final boolean force) > throws IOException { > Pair<HRegionInfo, HServerAddress> pair = > MetaReader.getRegion(this.catalogTracker, regionName); > if (pair == null) throw new > UnknownRegionException(Bytes.toStringBinary(regionName)); > HRegionInfo hri = pair.getFirst(); > if (force) this.assignmentManager.clearRegionFromTransition(hri); > this.assignmentManager.unassign(hri, force); > } > {code} > As part of clearRegionFromTransition() > {code} > synchronized (this.regions) { > this.regions.remove(hri); > for (Set<HRegionInfo> regions : this.servers.values()) { > regions.remove(hri); > } > } > {code} > the region is also removed. Hence when the master tries to identify the > region > {code} > if (!regions.containsKey(region)) { > debugLog(region, "Attempted to unassign region " + > region.getRegionNameAsString() + " but it is not " + > "currently assigned anywhere"); > return; > } > {code} > It is not able to identify the region. It exists in trunk and 0.90.x also. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira