hbase-java-api002(flush)
package api; import java.io.IOException; import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.util.Bytes; public class FlushEx { public static void main(String[] args) throws IOException {
Configuration cfg = HBaseConfiguration.create(); HTable table = new HTable(cfg,"xyj"); System.out.println("Auto flush"+table.isAutoFlush()); table.setAutoFlush(false); Put put1 =new Put(Bytes.toBytes("row4"));
put1.add(Bytes.toBytes("cf1"),Bytes.toBytes("qual4"),Bytes.toBytes("val4"));
table.put(put1); Put put2 =new Put(Bytes.toBytes("row5"));
put2.add(Bytes.toBytes("cf1"),Bytes.toBytes("qual5"),Bytes.toBytes("val5"));
table.put(put2); Put put3 =new Put(Bytes.toBytes("row6"));
put3.add(Bytes.toBytes("cf1"),Bytes.toBytes("qual6"),Bytes.toBytes("val6"));
table.put(put3); Get get = new Get(Bytes.toBytes("row4"));
Result result1 = table.get(get);
System.out.println("result1-->"+result1); table.flushCommits(); Result result2 = table.get(get);
System.out.println("result2-->"+result2); }
}
//2017-11-25 00:48:50,577 WARN [main] util.NativeCodeLoader (NativeCodeLoader.java:<clinit>(62)) - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
//2017-11-25 00:48:50,666 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/2012 17:52 GMT
//2017-11-25 00:48:50,667 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:host.name=alamps
//2017-11-25 00:48:50,667 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.version=1.7.0_65
//2017-11-25 00:48:50,667 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.vendor=Oracle Corporation
//2017-11-25 00:48:50,667 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.home=/home/hadoop/jdk1.7.0_65/jre
//2017-11-25 00:48:50,667 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.class.path=/home/hadoop/workspace/HBase/bin:/home/hadoop/hbase-0.96.2/lib/activation-1.1.jar:/home/hadoop/hbase-0.96.2/lib/aopalliance-1.0.jar:/home/hadoop/hbase-0.96.2/lib/asm-3.1.jar:/home/hadoop/hbase-0.96.2/lib/avro-1.7.4.jar:/home/hadoop/hbase-0.96.2/lib/commons-beanutils-1.7.0.jar:/home/hadoop/hbase-0.96.2/lib/commons-beanutils-core-1.8.0.jar:/home/hadoop/hbase-0.96.2/lib/commons-cli-1.2.jar:/home/hadoop/hbase-0.96.2/lib/commons-codec-1.7.jar:/home/hadoop/hbase-0.96.2/lib/commons-collections-3.2.1.jar:/home/hadoop/hbase-0.96.2/lib/commons-compress-1.4.1.jar:/home/hadoop/hbase-0.96.2/lib/commons-configuration-1.6.jar:/home/hadoop/hbase-0.96.2/lib/commons-daemon-1.0.13.jar:/home/hadoop/hbase-0.96.2/lib/commons-digester-1.8.jar:/home/hadoop/hbase-0.96.2/lib/commons-el-1.0.jar:/home/hadoop/hbase-0.96.2/lib/commons-httpclient-3.1.jar:/home/hadoop/hbase-0.96.2/lib/commons-io-2.4.jar:/home/hadoop/hbase-0.96.2/lib/commons-lang-2.6.jar:/home/hadoop/hbase-0.96.2/lib/commons-logging-1.1.1.jar:/home/hadoop/hbase-0.96.2/lib/commons-math-2.1.jar:/home/hadoop/hbase-0.96.2/lib/commons-net-3.1.jar:/home/hadoop/hbase-0.96.2/lib/findbugs-annotations-1.3.9-1.jar:/home/hadoop/hbase-0.96.2/lib/gmbal-api-only-3.0.0-b023.jar:/home/hadoop/hbase-0.96.2/lib/grizzly-framework-2.1.2.jar:/home/hadoop/hbase-0.96.2/lib/grizzly-http-2.1.2.jar:/home/hadoop/hbase-0.96.2/lib/grizzly-http-server-2.1.2.jar:/home/hadoop/hbase-0.96.2/lib/grizzly-http-servlet-2.1.2.jar:/home/hadoop/hbase-0.96.2/lib/grizzly-rcm-2.1.2.jar:/home/hadoop/hbase-0.96.2/lib/guava-12.0.1.jar:/home/hadoop/hbase-0.96.2/lib/guice-3.0.jar:/home/hadoop/hbase-0.96.2/lib/guice-servlet-3.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-annotations-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-auth-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-client-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-common-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-hdfs-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-hdfs-2.2.0-tests.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-mapreduce-client-app-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-mapreduce-client-common-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-mapreduce-client-core-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-mapreduce-client-jobclient-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-mapreduce-client-jobclient-2.2.0-tests.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-mapreduce-client-shuffle-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-yarn-api-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-yarn-client-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-yarn-common-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-yarn-server-common-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hadoop-yarn-server-nodemanager-2.2.0.jar:/home/hadoop/hbase-0.96.2/lib/hamcrest-core-1.3.jar:/home/hadoop/hbase-0.96.2/lib/hbase-client-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-common-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-common-0.96.2-hadoop2-tests.jar:/home/hadoop/hbase-0.96.2/lib/hbase-examples-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-hadoop2-compat-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-hadoop-compat-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-it-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-it-0.96.2-hadoop2-tests.jar:/home/hadoop/hbase-0.96.2/lib/hbase-prefix-tree-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-protocol-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-server-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-server-0.96.2-hadoop2-tests.jar:/home/hadoop/hbase-0.96.2/lib/hbase-shell-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-testing-util-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/hbase-thrift-0.96.2-hadoop2.jar:/home/hadoop/hbase-0.96.2/lib/htrace-core-2.04.jar:/home/hadoop/hbase-0.96.2/lib/httpclient-4.1.3.jar:/home/hadoop/hbase-0.96.2/lib/httpcore-4.1.3.jar:/home/hadoop/hbase-0.96.2/lib/jackson-core-asl-1.8.8.jar:/home/hadoop/hbase-0.96.2/lib/jackson-jaxrs-1.8.8.jar:/home/hadoop/hbase-0.96.2/lib/jackson-mapper-asl-1.8.8.jar:/home/hadoop/hbase-0.96.2/lib/jackson-xc-1.8.8.jar:/home/hadoop/hbase-0.96.2/lib/jamon-runtime-2.3.1.jar:/home/hadoop/hbase-0.96.2/lib/jasper-compiler-5.5.23.jar:/home/hadoop/hbase-0.96.2/lib/jasper-runtime-5.5.23.jar:/home/hadoop/hbase-0.96.2/lib/javax.inject-1.jar:/home/hadoop/hbase-0.96.2/lib/javax.servlet-3.1.jar:/home/hadoop/hbase-0.96.2/lib/javax.servlet-api-3.0.1.jar:/home/hadoop/hbase-0.96.2/lib/jaxb-api-2.2.2.jar:/home/hadoop/hbase-0.96.2/lib/jaxb-impl-2.2.3-1.jar:/home/hadoop/hbase-0.96.2/lib/jersey-client-1.9.jar:/home/hadoop/hbase-0.96.2/lib/jersey-core-1.8.jar:/home/hadoop/hbase-0.96.2/lib/jersey-grizzly2-1.9.jar:/home/hadoop/hbase-0.96.2/lib/jersey-guice-1.9.jar:/home/hadoop/hbase-0.96.2/lib/jersey-json-1.8.jar:/home/hadoop/hbase-0.96.2/lib/jersey-server-1.8.jar:/home/hadoop/hbase-0.96.2/lib/jersey-test-framework-core-1.9.jar:/home/hadoop/hbase-0.96.2/lib/jersey-test-framework-grizzly2-1.9.jar:/home/hadoop/hbase-0.96.2/lib/jets3t-0.6.1.jar:/home/hadoop/hbase-0.96.2/lib/jettison-1.3.1.jar:/home/hadoop/hbase-0.96.2/lib/jetty-6.1.26.jar:/home/hadoop/hbase-0.96.2/lib/jetty-sslengine-6.1.26.jar:/home/hadoop/hbase-0.96.2/lib/jetty-util-6.1.26.jar:/home/hadoop/hbase-0.96.2/lib/jruby-complete-1.6.8.jar:/home/hadoop/hbase-0.96.2/lib/jsch-0.1.42.jar:/home/hadoop/hbase-0.96.2/lib/jsp-2.1-6.1.14.jar:/home/hadoop/hbase-0.96.2/lib/jsp-api-2.1-6.1.14.jar:/home/hadoop/hbase-0.96.2/lib/jsr305-1.3.9.jar:/home/hadoop/hbase-0.96.2/lib/junit-4.11.jar:/home/hadoop/hbase-0.96.2/lib/libthrift-0.9.0.jar:/home/hadoop/hbase-0.96.2/lib/log4j-1.2.17.jar:/home/hadoop/hbase-0.96.2/lib/management-api-3.0.0-b012.jar:/home/hadoop/hbase-0.96.2/lib/metrics-core-2.1.2.jar:/home/hadoop/hbase-0.96.2/lib/netty-3.6.6.Final.jar:/home/hadoop/hbase-0.96.2/lib/paranamer-2.3.jar:/home/hadoop/hbase-0.96.2/lib/protobuf-java-2.5.0.jar:/home/hadoop/hbase-0.96.2/lib/servlet-api-2.5-6.1.14.jar:/home/hadoop/hbase-0.96.2/lib/slf4j-api-1.6.4.jar:/home/hadoop/hbase-0.96.2/lib/slf4j-log4j12-1.6.4.jar:/home/hadoop/hbase-0.96.2/lib/snappy-java-1.0.4.1.jar:/home/hadoop/hbase-0.96.2/lib/xmlenc-0.52.jar:/home/hadoop/hbase-0.96.2/lib/xz-1.0.jar:/home/hadoop/hbase-0.96.2/lib/zookeeper-3.4.5.jar
//2017-11-25 00:48:50,668 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.library.path=/home/hadoop/jdk1.7.0_65/jre/lib/i386/client:/home/hadoop/jdk1.7.0_65/jre/lib/i386:/home/hadoop/jdk1.7.0_65/jre/../lib/i386:/home/hadoop/app/jdk1.8.0_144/jre/lib/i386/client:/home/hadoop/app/jdk1.8.0_144/jre/lib/i386::/usr/java/packages/lib/i386:/lib:/usr/lib
//2017-11-25 00:48:50,670 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.io.tmpdir=/tmp
//2017-11-25 00:48:50,670 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.compiler=<NA>
//2017-11-25 00:48:50,670 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:os.name=Linux
//2017-11-25 00:48:50,670 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:os.arch=i386
//2017-11-25 00:48:50,670 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:os.version=2.6.32-358.el6.i686
//2017-11-25 00:48:50,670 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.name=hadoop
//2017-11-25 00:48:50,670 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.home=/home/hadoop
//2017-11-25 00:48:50,671 INFO [main] zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.dir=/home/hadoop/workspace/HBase
//2017-11-25 00:48:50,672 INFO [main] zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=localhost:2181 sessionTimeout=90000 watcher=hconnection-0x76a85e, quorum=localhost:2181, baseZNode=/hbase
//2017-11-25 00:48:50,717 INFO [main-SendThread(localhost:2181)] zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181. Will not attempt to authenticate using SASL (unknown error)
//2017-11-25 00:48:50,719 INFO [main] zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=hconnection-0x76a85e connecting to ZooKeeper ensemble=localhost:2181
//2017-11-25 00:48:50,731 INFO [main-SendThread(localhost:2181)] zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to localhost/0:0:0:0:0:0:0:1:2181, initiating session
//2017-11-25 00:48:50,738 INFO [main-SendThread(localhost:2181)] zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid = 0x15ff20c769a001e, negotiated timeout = 90000
//Auto flushtrue
//result1-->keyvalues=NONE
//result2-->keyvalues={row4/cf1:qual4/1511599731428/Put/vlen=4/mvcc=0}
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