HBASE-659 HLog#cacheFlushLock not cleared; hangs a region; revert code mistakenly committed

git-svn-id: https://svn.apache.org/repos/asf/hadoop/hbase/trunk@662147 13f79535-47bb-0310-9956-ffa450edef68

bin/hirb.rb

@@ -11,9 +11,9 @@
 
 # Run the java magic include and import basic HBase types.
 include Java
+import org.apache.hadoop.hbase.HBaseConfiguration
 import org.apache.hadoop.hbase.client.HTable
 import org.apache.hadoop.hbase.client.HBaseAdmin
-import org.apache.hadoop.hbase.HBaseConfiguration
 import org.apache.hadoop.hbase.HColumnDescriptor
 import org.apache.hadoop.hbase.HConstants
 import org.apache.hadoop.hbase.HTableDescriptor
@@ -30,17 +30,14 @@ def hbase
   puts ' version   Output HBase version'
 end
 
-def versionstr
+def version
-  "Version: #{org.apache.hadoop.hbase.util.VersionInfo.getVersion()},\
+  puts "Version: #{org.apache.hadoop.hbase.util.VersionInfo.getVersion()},\
  r#{org.apache.hadoop.hbase.util.VersionInfo.getRevision()},\
  #{org.apache.hadoop.hbase.util.VersionInfo.getDate()}"
 end
 
-def version
-  puts versionstr()
-end
-
 # Output a banner message that tells users where to go for help
 # TODO: Test that we're in irb context.  For now presume it.
-puts "HBase Shell; " + versionstr()
+# TODO: Test that we are in shell context.
-puts "+ Type 'hbase<RETURN>' for list of HBase commands"
+puts "HBase Shell; type 'hbase<RETURN>' for the list of supported HBase commands"
+version

conf/hbase-env.sh

@@ -23,7 +23,6 @@
 
 # The java implementation to use.  Required.
 # export JAVA_HOME=/usr/lib/j2sdk1.5-sun
-export JAVA_HOME=/usr
 
 # Extra Java CLASSPATH elements.  Optional.
 # export HBASE_CLASSPATH=

conf/hbase-site.xml

@@ -22,29 +22,4 @@
  */
 -->
 <configuration>
-  <property>
-    <name>hbase.master</name>
-    <value>durruti.local:60000</value>
-    <description>The host and port that the HBase master runs at.
-    A value of 'local' runs the master and a regionserver in
-    a single process.
-    </description>
-  </property>
-  <property>
-    <name>hbase.rootdir</name>
-    <value>hdfs://durruti.local:10000/hbase</value>
-    <description>The directory shared by region servers.
-    Should be fully-qualified to include the filesystem to use.
-    E.g: hdfs://NAMENODE_SERVER:PORT/HBASE_ROOTDIR
-    </description>
-  </property>
-
-<property>
-  <name>dfs.replication</name>
-  <value>1</value>
-  <description>Default block replication. 
-  The actual number of replications can be specified when the file is created.
-  The default is used if replication is not specified in create time.
-  </description>
-</property>
 </configuration>

conf/log4j.properties

@@ -41,6 +41,3 @@ log4j.appender.console.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss} %p %c{2}:
 # Custom Logging levels
 
 #log4j.logger.org.apache.hadoop.fs.FSNamesystem=DEBUG
-log4j.logger.org.apache.hadoop.fs=DEBUG
-log4j.logger.org.apache.hadoop.dfs=DEBUG
-log4j.logger.org.apache.hadoop.hbase=DEBUG

src/java/org/apache/hadoop/hbase/master/ChangeTableState.java

@@ -25,8 +25,6 @@ import java.util.HashSet;
 import java.util.Map;
 import java.util.TreeMap;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.ipc.HRegionInterface;
 import org.apache.hadoop.hbase.io.BatchUpdate;
@@ -35,7 +33,6 @@ import org.apache.hadoop.hbase.util.Writables;
 
 /** Instantiated to enable or disable a table */
 class ChangeTableState extends TableOperation {
-  private final Log LOG = LogFactory.getLog(this.getClass());
   private boolean online;
 
   protected final Map<String, HashSet<HRegionInfo>> servedRegions =

src/java/org/apache/hadoop/hbase/master/ColumnOperation.java

@@ -20,9 +20,6 @@
 package org.apache.hadoop.hbase.master;
 
 import java.io.IOException;
-
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.ipc.HRegionInterface;
 import org.apache.hadoop.hbase.io.BatchUpdate;
@@ -30,7 +27,6 @@ import org.apache.hadoop.hbase.TableNotDisabledException;
 import org.apache.hadoop.hbase.util.Writables;
 
 abstract class ColumnOperation extends TableOperation {
-  private final Log LOG = LogFactory.getLog(this.getClass());
   
   protected ColumnOperation(final HMaster master, final byte [] tableName) 
   throws IOException {

src/java/org/apache/hadoop/hbase/master/TableDelete.java

@@ -21,8 +21,6 @@ package org.apache.hadoop.hbase.master;
 
 import java.io.IOException;
 
-import org.apache.commons.logging.Log;
-import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.RemoteExceptionHandler;
@@ -35,7 +33,6 @@ import org.apache.hadoop.hbase.ipc.HRegionInterface;
  * Instantiated to delete a table. Table must be offline.
  */
 class TableDelete extends TableOperation {
-  private final Log LOG = LogFactory.getLog(this.getClass());
 
   TableDelete(final HMaster master, final byte [] tableName) throws IOException {
     super(master, tableName);

src/java/org/apache/hadoop/hbase/master/TableOperation.java

@@ -25,42 +25,59 @@ import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
 
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.HRegionInfo;
+import org.apache.hadoop.hbase.ipc.HRegionInterface;
 import org.apache.hadoop.hbase.HServerInfo;
 import org.apache.hadoop.hbase.MasterNotRunningException;
 import org.apache.hadoop.hbase.RemoteExceptionHandler;
-import org.apache.hadoop.hbase.TableNotFoundException;
-import org.apache.hadoop.hbase.io.RowResult;
-import org.apache.hadoop.hbase.ipc.HRegionInterface;
 import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.hadoop.hbase.TableNotFoundException;
 import org.apache.hadoop.hbase.util.Writables;
+import org.apache.hadoop.hbase.io.RowResult;
+import org.apache.hadoop.hbase.util.Sleeper;
 
 /**
  * Abstract base class for operations that need to examine all HRegionInfo 
- * objects in a table. (For a table, operate on each of its rows
+ * objects that make up a table. (For a table, operate on each of its rows
- * in .META.).
+ * in .META.) To gain the 
  */
 abstract class TableOperation implements HConstants {
-  private final Set<MetaRegion> metaRegions;
+  static final Long ZERO_L = Long.valueOf(0L);
-  protected final byte [] tableName;
+  
-  protected final Set<HRegionInfo> unservedRegions = new HashSet<HRegionInfo>();
+  protected static final Log LOG = LogFactory.getLog(TableOperation.class);
+  
+  protected Set<MetaRegion> metaRegions;
+  protected byte [] tableName;
+  protected Set<HRegionInfo> unservedRegions;
   protected HMaster master;
+  protected final int numRetries;
+  protected final Sleeper sleeper;
   
   protected TableOperation(final HMaster master, final byte [] tableName) 
   throws IOException {
+    this.sleeper = master.sleeper;
+    this.numRetries = master.numRetries;
+    
     this.master = master;
+    
     if (!this.master.isMasterRunning()) {
       throw new MasterNotRunningException();
     }
+
     this.tableName = tableName;
+    this.unservedRegions = new HashSet<HRegionInfo>();
 
     // We can not access any meta region if they have not already been
     // assigned and scanned.
+
     if (master.regionManager.metaScannerThread.waitForMetaRegionsOrClose()) {
       // We're shutting down. Forget it.
       throw new MasterNotRunningException(); 
     }
+
     this.metaRegions = master.regionManager.getMetaRegionsForTable(tableName);
   }
 
@@ -130,7 +147,7 @@ abstract class TableOperation implements HConstants {
       postProcessMeta(m, server);
       unservedRegions.clear();
 
-      return Boolean.TRUE;
+      return true;
     }
   }
 

src/java/org/apache/hadoop/hbase/util/MetaUtils.java

@@ -22,36 +22,28 @@ package org.apache.hadoop.hbase.util;
 
 import java.io.FileNotFoundException;
 import java.io.IOException;
-import java.util.ArrayList;
 import java.util.Collections;
-import java.util.List;
 import java.util.Map;
 import java.util.SortedMap;
 import java.util.TreeMap;
 
-import org.apache.commons.httpclient.methods.GetMethod;
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.hbase.HBaseConfiguration;
-import org.apache.hadoop.hbase.HColumnDescriptor;
 import org.apache.hadoop.hbase.HConstants;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.HStoreKey;
-import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.io.BatchUpdate;
 import org.apache.hadoop.hbase.io.Cell;
-import org.apache.hadoop.hbase.ipc.HRegionInterface;
 import org.apache.hadoop.hbase.regionserver.HLog;
 import org.apache.hadoop.hbase.regionserver.HRegion;
 import org.apache.hadoop.hbase.regionserver.InternalScanner;
 
 /**
- * Contains utility methods for manipulating HBase meta tables.
+ * Contains utility methods for manipulating HBase meta tables
- * Be sure to call {@link #shutdown()} when done with this class so it closes
- * resources opened during meta processing (ROOT, META, etc.).
  */
 public class MetaUtils {
   private static final Log LOG = LogFactory.getLog(MetaUtils.class);
@@ -217,6 +209,7 @@ public class MetaUtils {
     }
     
     // Open root region so we can scan it
+
     if (this.rootRegion == null) {
       openRootRegion();
     }
@@ -276,7 +269,8 @@ public class MetaUtils {
    * @param listener
    * @throws IOException
    */
-  public void scanMetaRegion(final HRegion m, final ScannerListener listener)
+  public void scanMetaRegion(final HRegion m,
+      final ScannerListener listener)
   throws IOException {
     InternalScanner metaScanner = m.getScanner(HConstants.COL_REGIONINFO_ARRAY,
       HConstants.EMPTY_START_ROW, HConstants.LATEST_TIMESTAMP, null);
@@ -345,99 +339,4 @@ public class MetaUtils {
     b.delete(HConstants.COL_STARTCODE);
     t.commit(b);
   }
-  
-  /**
-   * @param tableName
-   * @param hcd Add this column to <code>tableName</code>
-   * @throws IOException 
-   */
-  public void addColumn(final byte [] tableName,
-      final HColumnDescriptor hcd)
-  throws IOException {
-    List<HRegionInfo> metas = getMETARowsInROOT();
-    for (HRegionInfo hri: metas) {
-      final HRegion m = getMetaRegion(hri);
-      scanMetaRegion(m, new ScannerListener() {
-        private boolean inTable = false;
-        
-        @SuppressWarnings("synthetic-access")
-        public boolean processRow(HRegionInfo info) throws IOException {
-          if (Bytes.equals(info.getTableDesc().getName(), tableName)) {
-            this.inTable = true;
-            info.getTableDesc().addFamily(hcd);
-            updateMETARegionInfo(m, info);
-            return false;
-          }
-          // If we got here and we have not yet encountered the table yet,
-          // inTable will be false.  Otherwise, we've passed out the table.
-          // Stop the scanner.
-          return this.inTable;
-        }});
-    }
-  }
-  
-  /**
-   * @param tableName
-   * @param columnFamily Name of column name to remove.
-   * @throws IOException
-   */
-  public void deleteColumn(final byte [] tableName,
-      final byte [] columnFamily) throws IOException {
-    List<HRegionInfo> metas = getMETARowsInROOT();
-    for (HRegionInfo hri: metas) {
-      final HRegion m = getMetaRegion(hri);
-      scanMetaRegion(m, new ScannerListener() {
-        private boolean inTable = false;
-        
-        @SuppressWarnings("synthetic-access")
-        public boolean processRow(HRegionInfo info) throws IOException {
-          if (Bytes.equals(info.getTableDesc().getName(), tableName)) {
-            this.inTable = true;
-            info.getTableDesc().removeFamily(columnFamily);
-            updateMETARegionInfo(m, info);
-            return false;
-          }
-          // If we got here and we have not yet encountered the table yet,
-          // inTable will be false.  Otherwise, we've passed out the table.
-          // Stop the scanner.
-          return this.inTable;
-        }});
-    }
-  }
-  
-  private void updateMETARegionInfo(HRegion r, final HRegionInfo hri) 
-  throws IOException {
-    BatchUpdate b = new BatchUpdate(hri.getRegionName());
-    b.put(HConstants.COL_REGIONINFO, Writables.getBytes(hri));
-    r.batchUpdate(b);
-    if (LOG.isDebugEnabled()) {
-      LOG.debug("Updated " + Bytes.toString(HConstants.COL_REGIONINFO) +
-        " column in row " + hri.getRegionName() + " in " +
-        Bytes.toString(r.getRegionName()));
-    }
-  }
-
-  /**
-   * @return List of <code>.META.<code> {@link HRegionInfo} found in the
-   * <code>-ROOT-</code> table.
-   * @throws IOException
-   * @see #getMetaRegion(HRegionInfo)
-   */
-  public List<HRegionInfo> getMETARowsInROOT() throws IOException {
-    if (!initialized) {
-      throw new IllegalStateException("Must call initialize method first.");
-    }
-    final List<HRegionInfo> result = new ArrayList<HRegionInfo>();
-    scanRootRegion(new ScannerListener() {
-      @SuppressWarnings("unused")
-      public boolean processRow(HRegionInfo info) throws IOException {
-        if (Bytes.equals(info.getTableDesc().getName(),
-            HConstants.META_TABLE_NAME)) {
-          result.add(info);
-          return false;
-        }
-        return true;
-      }});
-    return result;
-  }
 }

src/webapps/master/WEB-INF/web.xml

@@ -9,11 +9,6 @@ Automatically created by Tomcat JspC.
 <web-app>
 
 
-    <servlet>
-        <servlet-name>org.apache.hadoop.hbase.generated.master.loader_jsp</servlet-name>
-        <servlet-class>org.apache.hadoop.hbase.generated.master.loader_jsp</servlet-class>
-    </servlet>
-
     <servlet>
         <servlet-name>org.apache.hadoop.hbase.generated.master.master_jsp</servlet-name>
         <servlet-class>org.apache.hadoop.hbase.generated.master.master_jsp</servlet-class>
@@ -24,11 +19,6 @@ Automatically created by Tomcat JspC.
         <servlet-class>org.apache.hadoop.hbase.generated.master.table_jsp</servlet-class>
     </servlet>
 
-    <servlet-mapping>
-        <servlet-name>org.apache.hadoop.hbase.generated.master.loader_jsp</servlet-name>
-        <url-pattern>/loader.jsp</url-pattern>
-    </servlet-mapping>
-
     <servlet-mapping>
         <servlet-name>org.apache.hadoop.hbase.generated.master.master_jsp</servlet-name>
         <url-pattern>/master.jsp</url-pattern>