diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java index 7af717bff49e..4bf2d9c25f1d 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java +++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java @@ -380,8 +380,8 @@ public class HRegionServer extends HBaseServerBase private Map coprocessorServiceHandlers = Maps.newHashMap(); /** - * @deprecated since 2.4.0 and will be removed in 4.0.0. - * Use {@link HRegionServer#UNSAFE_RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY} instead. + * @deprecated since 2.4.0 and will be removed in 4.0.0. Use + * {@link HRegionServer#UNSAFE_RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY} instead. * @see HBASE-24667 */ @Deprecated @@ -521,9 +521,10 @@ protected String getUseThisHostnameInstead(Configuration conf) throws IOExceptio String hostname = conf.get(UNSAFE_RS_HOSTNAME_KEY); if (conf.getBoolean(UNSAFE_RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY, false)) { if (!StringUtils.isBlank(hostname)) { - String msg = UNSAFE_RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY + " and " + UNSAFE_RS_HOSTNAME_KEY + - " are mutually exclusive. Do not set " + UNSAFE_RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY + - " to true while " + UNSAFE_RS_HOSTNAME_KEY + " is used"; + String msg = UNSAFE_RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY + " and " + + UNSAFE_RS_HOSTNAME_KEY + " are mutually exclusive. Do not set " + + UNSAFE_RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY + " to true while " + + UNSAFE_RS_HOSTNAME_KEY + " is used"; throw new IOException(msg); } else { return rpcServices.getSocketAddress().getHostName(); @@ -617,7 +618,9 @@ public boolean registerService(Service instance) { private static void checkCodecs(final Configuration c) throws IOException { // check to see if the codec list is available: String [] codecs = c.getStrings(REGIONSERVER_CODEC, (String[])null); - if (codecs == null) return; + if (codecs == null) { + return; + } for (String codec : codecs) { if (!CompressionTest.testCompression(codec)) { throw new IOException("Compression codec " + codec + @@ -852,9 +855,15 @@ public void run() { // Send interrupts to wake up threads if sleeping so they notice shutdown. // TODO: Should we check they are alive? If OOME could have exited already - if (this.hMemManager != null) this.hMemManager.stop(); - if (this.cacheFlusher != null) this.cacheFlusher.interruptIfNecessary(); - if (this.compactSplitThread != null) this.compactSplitThread.interruptIfNecessary(); + if (this.hMemManager != null) { + this.hMemManager.stop(); + } + if (this.cacheFlusher != null) { + this.cacheFlusher.interruptIfNecessary(); + } + if (this.compactSplitThread != null) { + this.compactSplitThread.interruptIfNecessary(); + } // Stop the snapshot and other procedure handlers, forcefully killing all running tasks if (rspmHost != null) { @@ -949,7 +958,9 @@ private boolean containsMetaTableRegions() { } private boolean areAllUserRegionsOffline() { - if (getNumberOfOnlineRegions() > 2) return false; + if (getNumberOfOnlineRegions() > 2) { + return false; + } boolean allUserRegionsOffline = true; for (Map.Entry e: this.onlineRegions.entrySet()) { if (!e.getValue().getRegionInfo().isMetaRegion()) { @@ -1185,7 +1196,9 @@ private ClusterStatusProtos.ServerLoad buildServerLoad(long reportStartTime, lon private String getOnlineRegionsAsPrintableString() { StringBuilder sb = new StringBuilder(); for (Region r: this.onlineRegions.values()) { - if (sb.length() > 0) sb.append(", "); + if (sb.length() > 0) { + sb.append(", "); + } sb.append(r.getRegionInfo().getEncodedName()); } return sb.toString(); @@ -1284,7 +1297,7 @@ private void shutdownWAL(final boolean close) { * @param c Extra configuration. */ protected void handleReportForDutyResponse(final RegionServerStartupResponse c) - throws IOException { + throws IOException { try { boolean updateRootDir = false; for (NameStringPair e : c.getMapEntriesList()) { @@ -1560,7 +1573,7 @@ protected void chore() { this.instance.compactSplitThread.requestCompaction(hr, s, getName() + " requests major compaction; use default priority", Store.NO_PRIORITY, - CompactionLifeCycleTracker.DUMMY, null); + CompactionLifeCycleTracker.DUMMY, null); } else { this.instance.compactSplitThread.requestCompaction(hr, s, getName() + " requests major compaction; use configured priority", @@ -1595,7 +1608,9 @@ private static class PeriodicMemStoreFlusher extends ScheduledChore { protected void chore() { final StringBuilder whyFlush = new StringBuilder(); for (HRegion r : this.server.onlineRegions.values()) { - if (r == null) continue; + if (r == null) { + continue; + } if (r.shouldFlush(whyFlush)) { FlushRequester requester = server.getFlushRequester(); if (requester != null) { @@ -1698,7 +1713,7 @@ private void startServices() throws IOException { // Health checker thread. if (isHealthCheckerConfigured()) { int sleepTime = this.conf.getInt(HConstants.HEALTH_CHORE_WAKE_FREQ, - HConstants.DEFAULT_THREAD_WAKE_FREQUENCY); + HConstants.DEFAULT_THREAD_WAKE_FREQUENCY); healthCheckChore = new HealthCheckChore(sleepTime, this, getConfiguration()); } // Executor status collect thread. @@ -2134,7 +2149,9 @@ public boolean reportRegionStateTransition(final RegionStateTransitionContext co " after " + pauseTime + "ms delay (Master is coming online...).": " immediately."), ioe); - if (pause) Threads.sleep(pauseTime); + if (pause) { + Threads.sleep(pauseTime); + } tries++; if (rssStub == rss) { rssStub = null; @@ -2168,7 +2185,7 @@ private void triggerFlushInPrimaryRegion(final HRegion region) { } else { LOG.info("Executor is null; not running flush of primary region replica for {}", region.getRegionInfo()); - } + } } @InterfaceAudience.Private @@ -2299,8 +2316,7 @@ protected void stopServiceThreads() { } /** - * @return Return the object that implements the replication - * source executorService. + * @return Return the object that implements the replication source executorService. */ @Override public ReplicationSourceService getReplicationSourceService() { @@ -2397,8 +2413,8 @@ protected synchronized ServerName createRegionServerStatusStub(boolean refresh) } /** - * @return True if we should break loop because cluster is going down or - * this server has been stopped or hdfs has gone bad. + * @return True if we should break loop because cluster is going down or this server has been + * stopped or hdfs has gone bad. */ private boolean keepLooping() { return !this.stopped && isClusterUp(); @@ -2412,10 +2428,14 @@ private boolean keepLooping() { * @throws IOException */ private RegionServerStartupResponse reportForDuty() throws IOException { - if (this.masterless) return RegionServerStartupResponse.getDefaultInstance(); + if (this.masterless) { + return RegionServerStartupResponse.getDefaultInstance(); + } ServerName masterServerName = createRegionServerStatusStub(true); RegionServerStatusService.BlockingInterface rss = rssStub; - if (masterServerName == null || rss == null) return null; + if (masterServerName == null || rss == null) { + return null; + } RegionServerStartupResponse result = null; try { rpcServices.requestCount.reset(); @@ -2493,12 +2513,16 @@ private void closeMetaTableRegions(final boolean abort) { if (hri.isMetaRegion()) { meta = e.getValue(); } - if (meta != null) break; + if (meta != null) { + break; + } } } finally { this.onlineRegionsLock.writeLock().unlock(); } - if (meta != null) closeRegionIgnoreErrors(meta.getRegionInfo(), abort); + if (meta != null) { + closeRegionIgnoreErrors(meta.getRegionInfo(), abort); + } } /** @@ -2722,17 +2746,17 @@ public static void main(String[] args) { */ @Override public List getRegions(TableName tableName) { - List tableRegions = new ArrayList<>(); - synchronized (this.onlineRegions) { - for (HRegion region: this.onlineRegions.values()) { - RegionInfo regionInfo = region.getRegionInfo(); - if(regionInfo.getTable().equals(tableName)) { - tableRegions.add(region); - } - } - } - return tableRegions; - } + List tableRegions = new ArrayList<>(); + synchronized (this.onlineRegions) { + for (HRegion region: this.onlineRegions.values()) { + RegionInfo regionInfo = region.getRegionInfo(); + if(regionInfo.getTable().equals(tableName)) { + tableRegions.add(region); + } + } + } + return tableRegions; + } @Override public List getRegions() { @@ -2906,13 +2930,16 @@ public boolean removeRegion(final HRegion r, ServerName destination) { if (closeSeqNum == HConstants.NO_SEQNUM) { // No edits in WAL for this region; get the sequence number when the region was opened. closeSeqNum = r.getOpenSeqNum(); - if (closeSeqNum == HConstants.NO_SEQNUM) closeSeqNum = 0; + if (closeSeqNum == HConstants.NO_SEQNUM) { + closeSeqNum = 0; + } } boolean selfMove = ServerName.isSameAddress(destination, this.getServerName()); addToMovedRegions(r.getRegionInfo().getEncodedName(), destination, closeSeqNum, selfMove); if (selfMove) { - this.regionServerAccounting.getRetainedRegionRWRequestsCnt().put(r.getRegionInfo().getEncodedName() - , new Pair<>(r.getReadRequestsCount(), r.getWriteRequestsCount())); + this.regionServerAccounting.getRetainedRegionRWRequestsCnt().put( + r.getRegionInfo().getEncodedName(), + new Pair<>(r.getReadRequestsCount(), r.getWriteRequestsCount())); } } this.regionFavoredNodesMap.remove(r.getRegionInfo().getEncodedName()); @@ -3028,7 +3055,7 @@ public void updateRegionFavoredNodesMapping(String encodedRegionName, * Return the favored nodes for a region given its encoded name. Look at the * comment around {@link #regionFavoredNodesMap} on why we convert to InetSocketAddress[] * here. - * @param encodedRegionName + * @param encodedRegionName the encoded region name. * @return array of favored locations */ @Override @@ -3048,7 +3075,7 @@ private static class MovedRegionInfo { MovedRegionInfo(ServerName serverName, long closeSeqNum) { this.serverName = serverName; this.seqNum = closeSeqNum; - } + } public ServerName getServerName() { return serverName; @@ -3065,7 +3092,8 @@ public long getSeqNum() { */ private static final int TIMEOUT_REGION_MOVED = (2 * 60 * 1000); - private void addToMovedRegions(String encodedName, ServerName destination, long closeSeqNum, boolean selfMove) { + private void addToMovedRegions(String encodedName, ServerName destination, + long closeSeqNum, boolean selfMove) { if (selfMove) { LOG.warn("Not adding moved region record: " + encodedName + " to self."); return; @@ -3086,7 +3114,7 @@ public MovedRegionInfo getMovedRegion(String encodedRegionName) { @InterfaceAudience.Private public int movedRegionCacheExpiredTime() { - return TIMEOUT_REGION_MOVED; + return TIMEOUT_REGION_MOVED; } private String getMyEphemeralNodePath() { @@ -3114,8 +3142,8 @@ CoprocessorServiceResponse execRegionServerService( String serviceName = call.getServiceName(); Service service = coprocessorServiceHandlers.get(serviceName); if (service == null) { - throw new UnknownProtocolException(null, "No registered coprocessor executorService found for " + - serviceName); + throw new UnknownProtocolException(null, + "No registered coprocessor executorService found for " + serviceName); } ServiceDescriptor serviceDesc = service.getDescriptorForType();