Hi there,
It worked well while I fired 5 threads to fetch data from HBASE,but
it failed after I incresed to 6 threads.
Although it showed some WARN, the thread job can't be done!
My hbase is the latest version hbase0.20.
I want to test HBase multi read performance.
Any suggestion?
Thank you
Fleming
hbase-env.sh
export HBASE_MANAGES_ZK=true
09/08/21 09:54:07 WARN zookeeper.ZooKeeperWrapper: Failed to create /hbase
-- check quorum servers, currently=10.42.253.182:2181
org.apache.zookeeper.KeeperException$ConnectionLossException:
KeeperErrorCode = ConnectionLoss for /hbase
at
org.apache.zookeeper.KeeperException.create(KeeperException.java:90)
at
org.apache.zookeeper.KeeperException.create(KeeperException.java:42)
at org.apache.zookeeper.ZooKeeper.create(ZooKeeper.java:522)
at
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.ensureExists(ZooKeeperWrapper.java:342)
at
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.ensureParentExists(ZooKeeperWrapper.java:365)
at
org.apache.hadoop.hbase.zookeeper.ZooKeeperWrapper.checkOutOfSafeMode(ZooKeeperWrapper.java:478)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRootRegion(HConnectionManager.java:846)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:515)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:491)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:565)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:524)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:491)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegionInMeta(HConnectionManager.java:565)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:528)
at
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.locateRegion(HConnectionManager.java:491)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:123)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:101)
at
org.gridgain.examples.executor.FlowJob.getHBaseData(FlowJob.java:144)
at org.gridgain.examples.executor.FlowJob.call(FlowJob.java:78)
at org.gridgain.examples.executor.FlowJob.call(FlowJob.java:1)
at
org.gridgain.grid.kernal.executor.GridExecutorCallableTask$1.execute(GridExecutorCallableTask.java:57)
at
org.gridgain.grid.kernal.processors.job.GridJobWorker.body(GridJobWorker.java:406)
at
org.gridgain.grid.util.runnable.GridRunnable$1.run(GridRunnable.java:142)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
org.gridgain.grid.util.runnable.GridRunnable.run(GridRunnable.java:194)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)
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