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HBASE-7501 Introduce MetaEditor method that both adds and deletes rows in .META. table (Matteo Bertozzi) 

git-svn-id: https://svn.apache.org/repos/asf/hbase/branches/hbase-7290@1445845 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Jonathan Hsieh 2013-02-13 18:54:07 +00:00
parent 253cc4c212
commit 3aa26c1134
1 changed files with 52 additions and 0 deletions
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52
hbase-server/src/main/java/org/apache/hadoop/hbase/catalog/MetaEditor.java
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@ -18,6 +18,7 @@
package org.apache.hadoop.hbase.catalog;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.net.ConnectException;
import java.util.ArrayList;
import java.util.Arrays;
@ -32,6 +33,7 @@ import org.apache.hadoop.hbase.NotAllMetaRegionsOnlineException;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Mutation;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.util.Bytes;
@ -160,6 +162,26 @@ public class MetaEditor {
}
}
/**
* Execute the passed <code>mutations</code> against <code>.META.</code> table.
* @param ct CatalogTracker on whose back we will ride the edit.
* @param mutations Puts and Deletes to execute on .META.
* @throws IOException
*/
static void mutateMetaTable(final CatalogTracker ct, final List<Mutation> mutations)
throws IOException {
HTable t = MetaReader.getMetaHTable(ct);
try {
t.batch(mutations);
} catch (InterruptedException e) {
InterruptedIOException ie = new InterruptedIOException(e.getMessage());
ie.initCause(e);
throw ie;
} finally {
t.close();
}
}
/**
* Adds a META row for the specified new region.
* @param regionInfo region information
@ -350,6 +372,36 @@ public class MetaEditor {
LOG.info("Deleted from META, regions: " + regionsInfo);
}
/**
* Adds and Removes the specified regions from .META.
* @param catalogTracker
* @param regionsToRemove list of regions to be deleted from META
* @param regionsToAdd list of regions to be added to META
* @throws IOException
*/
public static void mutateRegions(CatalogTracker catalogTracker,
final List<HRegionInfo> regionsToRemove, final List<HRegionInfo> regionsToAdd)
throws IOException {
List<Mutation> mutation = new ArrayList<Mutation>();
if (regionsToRemove != null) {
for (HRegionInfo hri: regionsToRemove) {
mutation.add(new Delete(hri.getRegionName()));
}
}
if (regionsToAdd != null) {
for (HRegionInfo hri: regionsToAdd) {
mutation.add(makePutFromRegionInfo(hri));
}
}
mutateMetaTable(catalogTracker, mutation);
if (regionsToRemove != null && regionsToRemove.size() > 0) {
LOG.debug("Deleted from META, regions: " + regionsToRemove);
}
if (regionsToAdd != null && regionsToAdd.size() > 0) {
LOG.debug("Add to META, regions: " + regionsToAdd);
}
}
/**
* Deletes daughters references in offlined split parent.
* @param catalogTracker