HBASE-1506 [performance] Make splits faster
git-svn-id: https://svn.apache.org/repos/asf/hadoop/hbase/trunk@822072 13f79535-47bb-0310-9956-ffa450edef68
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@ -98,6 +98,7 @@ Release 0.21.0 - Unreleased
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HBASE-1875 Compression test utility
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HBASE-1832 Faster enable/disable/delete
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HBASE-1481 Add fast row key only scanning
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HBASE-1506 [performance] Make splits faster
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OPTIMIZATIONS
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@ -341,8 +341,17 @@ class RegionManager implements HConstants {
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LOG.info("Assigning region " + regionName + " to " + sinfo.getServerName());
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rs.setPendingOpen(sinfo.getServerName());
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this.regionsInTransition.put(regionName, rs);
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if (returnMsgs != null) {
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returnMsgs.add(new HMsg(HMsg.Type.MSG_REGION_OPEN, rs.getRegionInfo()));
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}
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}
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returnMsgs.add(new HMsg(HMsg.Type.MSG_REGION_OPEN, rs.getRegionInfo()));
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/**
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* @param regionName
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* @param sinfo
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*/
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void doRegionAssignment(final String regionName, final HServerInfo sinfo) {
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doRegionAssignment(this.regionsInTransition.get(regionName), sinfo, null);
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}
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/*
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@ -454,7 +454,8 @@ class ServerManager implements HConstants {
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break;
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case MSG_REPORT_SPLIT:
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processSplitRegion(region, incomingMsgs[++i], incomingMsgs[++i]);
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processSplitRegion(serverInfo, region, incomingMsgs[++i],
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incomingMsgs[++i]);
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break;
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default:
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@ -496,18 +497,26 @@ class ServerManager implements HConstants {
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* @param splitB
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* @param returnMsgs
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*/
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private void processSplitRegion(HRegionInfo region, HMsg splitA, HMsg splitB) {
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private void processSplitRegion(final HServerInfo si, final HRegionInfo region,
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final HMsg splitA, final HMsg splitB) {
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synchronized (master.regionManager) {
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// Cancel any actions pending for the affected region.
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// This prevents the master from sending a SPLIT message if the table
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// has already split by the region server.
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master.regionManager.endActions(region.getRegionName());
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assignSplitDaughter(splitA.getRegionInfo());
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this.master.regionManager.endActions(region.getRegionName());
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// Region A is now opened immediately on the splitting server. The message
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// that its been successfully opened is probably just behind this split
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// message. Set up the master state so that its properly primed for the
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// coming open message.
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HRegionInfo a = splitA.getRegionInfo();
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assignSplitDaughter(a);
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this.master.regionManager.doRegionAssignment(a.getRegionNameAsString(), si);
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// Region B will be assigned old-school style by the master.
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assignSplitDaughter(splitB.getRegionInfo());
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if (region.isMetaTable()) {
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// A meta region has split.
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master.regionManager.offlineMetaRegion(region.getStartKey());
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master.regionManager.incrementNumMetaRegions();
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this.master.regionManager.offlineMetaRegion(region.getStartKey());
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this.master.regionManager.incrementNumMetaRegions();
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}
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}
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}
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@ -578,7 +587,7 @@ class ServerManager implements HConstants {
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if (duplicateAssignment) {
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if (LOG.isDebugEnabled()) {
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LOG.debug("region server " + serverInfo.getServerAddress().toString()
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+ " should not have opened region " + Bytes.toString(region.getRegionName()));
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+ " should not have opened region " + Bytes.toString(region.getRegionName()));
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}
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// This Region should not have been opened.
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@ -30,10 +30,13 @@ import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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import org.apache.hadoop.hbase.HBaseConfiguration;
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import org.apache.hadoop.hbase.HConstants;
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import org.apache.hadoop.hbase.HMsg;
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import org.apache.hadoop.hbase.HRegionInfo;
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import org.apache.hadoop.hbase.RemoteExceptionHandler;
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import org.apache.hadoop.hbase.client.HTable;
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import org.apache.hadoop.hbase.client.Put;
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import org.apache.hadoop.hbase.regionserver.HRegionServer.ToDoEntry;
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import org.apache.hadoop.hbase.util.Bytes;
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import org.apache.hadoop.hbase.util.Writables;
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import org.apache.hadoop.util.StringUtils;
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@ -217,8 +220,8 @@ class CompactSplitThread extends Thread implements HConstants {
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newRegions[i].getRegionInfo()));
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t.put(put);
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}
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// Now tell the master about the new regions
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// Now tell the master about the new regions. Note that we'll online
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// the A region ourselves on this server. Master only has to online B.
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server.reportSplit(oldRegionInfo, newRegions[0].getRegionInfo(),
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newRegions[1].getRegionInfo());
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LOG.info("region split, META updated, and report to master all" +
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@ -226,8 +229,15 @@ class CompactSplitThread extends Thread implements HConstants {
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", new regions: " + newRegions[0].toString() + ", " +
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newRegions[1].toString() + ". Split took " +
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StringUtils.formatTimeDiff(System.currentTimeMillis(), startTime));
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// Do not serve the new regions. Let the Master assign them.
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// Server region A. Let master assign region B.
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HRegionInfo hri = newRegions[0].getRegionInfo();
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HMsg msg = new HMsg(HMsg.Type.MSG_REGION_OPEN, hri,
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Bytes.toBytes("Local immediate open"));
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try {
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this.server.toDo.put(new HRegionServer.ToDoEntry(msg));
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} catch (InterruptedException e) {
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throw new IOException("Failed queue of open of " + hri, e);
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}
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}
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/**
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@ -454,11 +454,14 @@ public class HRegionServer implements HConstants, HRegionInterface,
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LOG.warn("unable to report to master for " + (now - lastMsg) +
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" milliseconds - retrying");
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}
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if ((now - lastMsg) >= msgInterval) {
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// Send messages to the master IF this.msgInterval has elapsed OR if
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// we have something to tell (and we didn't just fail sending master).
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if ((now - lastMsg) >= msgInterval ||
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(outboundArray.length == 0 && !this.outboundMsgs.isEmpty())) {
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try {
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doMetrics();
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MemoryUsage memory =
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ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
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ManagementFactory.getMemoryMXBean().getHeapMemoryUsage();
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HServerLoad hsl = new HServerLoad(requestCount.get(),
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(int)(memory.getUsed()/1024/1024),
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(int)(memory.getMax()/1024/1024));
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@ -1449,7 +1452,7 @@ public class HRegionServer implements HConstants, HRegionInterface,
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/*
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* Data structure to hold a HMsg and retries count.
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*/
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private static final class ToDoEntry {
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static final class ToDoEntry {
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protected final AtomicInteger tries = new AtomicInteger(0);
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protected final HMsg msg;
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