Please include a diff instead, it's hard to compare.
Also I'm not sure there will be a 0.20.7.
-ryan
On Wed, Nov 24, 2010 at 3:45 PM, Ted Yu <yuzhih...@gmail.com> wrote:
> Hi,
> I wanted to automate the manual deletion of dangling row(s) in .META. table.
> Please kindly comment on the following modification to HMaster.createTable()
> which is base on 0.20.6 codebase:
>
> long scannerid = srvr.openScanner(metaRegionName, scan);
> try {
> HashSet<byte[]> regions = new HashSet<byte[]>();
> boolean cleanTable = false, // whether the table has a row in
> .META. whose start key is empty
> exists = false;
> Result data = srvr.next(scannerid);
> while (data != null) {
> if (data != null && data.size() > 0) {
> HRegionInfo info = Writables.getHRegionInfo(
> data.getValue(CATALOG_FAMILY,
> REGIONINFO_QUALIFIER));
> if (info.getTableDesc().getNameAsString().equals(tableName))
> {
> exists = true;
> if (info.getStartKey().length == 0) {
> cleanTable = true;
> } else {
> regions.add(info.getRegionName());
> }
> }
> }
> data = srvr.next(scannerid);
> }
> if (exists) {
> if (!cleanTable) {
> HTable meta = new HTable(HConstants.META_TABLE_NAME);
> for (byte[] region : regions) {
> Delete d = new Delete(region);
> meta.delete(d);
> LOG.info("dangling row " + Bytes.toString(region) + "
> deleted from .META.");
> }
> } else {
> // A region for this table already exists. Ergo table
> exists.
> throw new TableExistsException(tableName);
> }
> }
> } finally {
> srvr.close(scannerid);
> }
>
> Thanks
>
