Java Code Examples for org.apache.hadoop.hbase.MetaTableAccessor#addDaughtersToPut()

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Example 1

Source File: IndexSplitTransaction.java From phoenix with Apache License 2.0

6 votes

private void offlineParentInMetaAndputMetaEntries(Connection conn,
    HRegionInfo parent, HRegionInfo splitA, HRegionInfo splitB,
    ServerName serverName, List<Mutation> metaEntries) throws IOException {
  List<Mutation> mutations = metaEntries;
  HRegionInfo copyOfParent = new HRegionInfo(parent);
  copyOfParent.setOffline(true);
  copyOfParent.setSplit(true);

  //Put for parent
  Put putParent = MetaTableAccessor.makePutFromRegionInfo(copyOfParent);
  MetaTableAccessor.addDaughtersToPut(putParent, splitA, splitB);
  mutations.add(putParent);
  
  //Puts for daughters
  Put putA = MetaTableAccessor.makePutFromRegionInfo(splitA);
  Put putB = MetaTableAccessor.makePutFromRegionInfo(splitB);

  addLocation(putA, serverName, 1); //these are new regions, openSeqNum = 1 is fine.
  addLocation(putB, serverName, 1);
  mutations.add(putA);
  mutations.add(putB);
  MetaTableAccessor.mutateMetaTable(conn, mutations);
}

Example 2

Source File: LocalIndexSplitter.java From phoenix with Apache License 2.0

4 votes

@Override
public void preSplitBeforePONR(ObserverContext<RegionCoprocessorEnvironment> ctx,
        byte[] splitKey, List<Mutation> metaEntries) throws IOException {
    RegionCoprocessorEnvironment environment = ctx.getEnvironment();
    HTableDescriptor tableDesc = ctx.getEnvironment().getRegion().getTableDesc();
    if (SchemaUtil.isSystemTable(tableDesc.getName())) {
        return;
    }
    RegionServerServices rss = ctx.getEnvironment().getRegionServerServices();
    if (tableDesc.getValue(MetaDataUtil.IS_LOCAL_INDEX_TABLE_PROP_BYTES) == null
            || !Boolean.TRUE.equals(PBoolean.INSTANCE.toObject(tableDesc
                    .getValue(MetaDataUtil.IS_LOCAL_INDEX_TABLE_PROP_BYTES)))) {
        TableName indexTable =
                TableName.valueOf(MetaDataUtil.getLocalIndexPhysicalName(tableDesc.getName()));
        if (!MetaTableAccessor.tableExists(rss.getConnection(), indexTable)) return;

        HRegion indexRegion = IndexUtil.getIndexRegion(environment);
        if (indexRegion == null) {
            LOG.warn("Index region corresponindg to data region " + environment.getRegion()
                    + " not in the same server. So skipping the split.");
            ctx.bypass();
            return;
        }
        try {
            int encodedVersion = VersionUtil.encodeVersion(environment.getHBaseVersion());
            if(encodedVersion >= SPLIT_TXN_MINIMUM_SUPPORTED_VERSION) {
                st = new SplitTransaction(indexRegion, splitKey);
                st.useZKForAssignment =
                        environment.getConfiguration().getBoolean("hbase.assignment.usezk",
                            true);
            } else {
                st = new IndexSplitTransaction(indexRegion, splitKey);
            }

            if (!st.prepare()) {
                LOG.error("Prepare for the table " + indexRegion.getTableDesc().getNameAsString()
                    + " failed. So returning null. ");
                ctx.bypass();
                return;
            }
            indexRegion.forceSplit(splitKey);
            daughterRegions = st.stepsBeforePONR(rss, rss, false);
            HRegionInfo copyOfParent = new HRegionInfo(indexRegion.getRegionInfo());
            copyOfParent.setOffline(true);
            copyOfParent.setSplit(true);
            // Put for parent
            Put putParent = MetaTableAccessor.makePutFromRegionInfo(copyOfParent);
            MetaTableAccessor.addDaughtersToPut(putParent,
                    daughterRegions.getFirst().getRegionInfo(),
                    daughterRegions.getSecond().getRegionInfo());
            metaEntries.add(putParent);
            // Puts for daughters
            Put putA = MetaTableAccessor.makePutFromRegionInfo(
                    daughterRegions.getFirst().getRegionInfo());
            Put putB = MetaTableAccessor.makePutFromRegionInfo(
                    daughterRegions.getSecond().getRegionInfo());
            st.addLocation(putA, rss.getServerName(), 1);
            st.addLocation(putB, rss.getServerName(), 1);
            metaEntries.add(putA);
            metaEntries.add(putB);
        } catch (Exception e) {
            ctx.bypass();
            LOG.warn("index region splitting failed with the exception ", e);
            if (st != null){
                st.rollback(rss, rss);
                st = null;
                daughterRegions = null;
            }
        }
    }
}