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From "Rob Burkhard" <...@robburkhard.com>
Subject RE: Request Apache Accumulo error help using Hadoop and Zookeeper in a test environment
Date Wed, 21 Dec 2011 03:25:00 GMT
This is a single host setup.
walogs exists.


Here is the log from today.  I have scaled down the memory settings, 
but maybe have not scaled down enough?


20 18:20:00,592 [server.Accumulo] INFO : tserver starting
20 18:20:00,691 [server.Accumulo] INFO : Instance
03c6597b-91c8-4102-8f1a-f530eef8ce9a
20 18:20:00,726 [server.Accumulo] INFO : Data Version 3
20 18:20:00,726 [server.Accumulo] INFO : Attempting to talk to zookeeper
20 18:20:00,872 [server.Accumulo] INFO : Zookeeper connected and
initialized, attemping to talk to HDFS
20 18:20:00,874 [server.Accumulo] INFO : Connected to HDFS
20 18:20:00,881 [server.Accumulo] INFO : gc.cycle.delay = 5m
20 18:20:00,882 [server.Accumulo] INFO : gc.cycle.start = 30s
20 18:20:00,882 [server.Accumulo] INFO : gc.port.client = 50091
20 18:20:00,882 [server.Accumulo] INFO : gc.threads.delete = 16
20 18:20:00,882 [server.Accumulo] INFO : general.classpaths = 
    $ACCUMULO_HOME/src/server/target/classes/,
    $ACCUMULO_HOME/src/core/target/classes/,
    $ACCUMULO_HOME/src/start/target/classes/,
    $ACCUMULO_HOME/src/examples/target/classes/,
    $ACCUMULO_HOME/lib/[^.].$ACCUMULO_VERSION.jar,
    $ACCUMULO_HOME/lib/[^.].*.jar,
    $ZOOKEEPER_HOME/[^.].*.jar,
    $HADOOP_HOME/conf,
    $HADOOP_HOME/[^.].*.jar,
    $HADOOP_HOME/lib/[^.].*.jar,
      
20 18:20:00,882 [server.Accumulo] INFO : general.dynamic.classpaths =
$ACCUMULO_HOME/lib/ext/[^.].*.jar

20 18:20:00,882 [server.Accumulo] INFO : general.rpc.timeout = 120s
20 18:20:00,882 [server.Accumulo] INFO : instance.dfs.dir = /accumulo
20 18:20:00,882 [server.Accumulo] INFO : instance.dfs.uri = 
20 18:20:00,883 [server.Accumulo] INFO : instance.secret = cloud
20 18:20:00,883 [server.Accumulo] INFO : instance.zookeeper.host =
localhost:2181
20 18:20:00,883 [server.Accumulo] INFO : instance.zookeeper.timeout =
30s
20 18:20:00,883 [server.Accumulo] INFO : logger.archive = false
20 18:20:00,883 [server.Accumulo] INFO : logger.copy.threadpool.size = 2
20 18:20:00,883 [server.Accumulo] INFO : logger.dir.walog =
/home/hadoop/walogs
20 18:20:00,883 [server.Accumulo] INFO : logger.monitor.fs = true
20 18:20:00,884 [server.Accumulo] INFO : logger.port.client = 11224
20 18:20:00,884 [server.Accumulo] INFO : logger.port.search = false
20 18:20:00,884 [server.Accumulo] INFO :
logger.recovery.file.replication = 1
20 18:20:00,884 [server.Accumulo] INFO : logger.server.threadcheck.time
= 1s
20 18:20:00,884 [server.Accumulo] INFO : logger.server.threads.minimum =
2
20 18:20:00,884 [server.Accumulo] INFO : logger.sort.buffer.size = 200M
20 18:20:00,884 [server.Accumulo] INFO : master.bulk.retries = 3
20 18:20:00,885 [server.Accumulo] INFO : master.bulk.server.max = 4
20 18:20:00,885 [server.Accumulo] INFO : master.bulk.threadpool.size = 5
20 18:20:00,885 [server.Accumulo] INFO : master.logger.balancer =
org.apache.accumulo.server.master.balancer.SimpleLoggerBalancer
20 18:20:00,885 [server.Accumulo] INFO : master.port.client = 9999
20 18:20:00,885 [server.Accumulo] INFO : master.recovery.max.age = 60m
20 18:20:00,885 [server.Accumulo] INFO : master.recovery.pool = recovery
20 18:20:00,885 [server.Accumulo] INFO : master.recovery.queue = default
20 18:20:00,885 [server.Accumulo] INFO : master.recovery.reducers = 10
20 18:20:00,886 [server.Accumulo] INFO : master.recovery.sort.mapreduce
= false
20 18:20:00,886 [server.Accumulo] INFO : master.recovery.time.max = 30m
20 18:20:00,886 [server.Accumulo] INFO : master.server.threadcheck.time
= 1s
20 18:20:00,886 [server.Accumulo] INFO : master.server.threads.minimum =
2
20 18:20:00,886 [server.Accumulo] INFO : master.tablet.balancer =
org.apache.accumulo.server.master.balancer.DefaultLoadBalancer
20 18:20:00,886 [server.Accumulo] INFO : monitor.port.client = 50095
20 18:20:00,886 [server.Accumulo] INFO : monitor.port.log4j = 4560
20 18:20:00,886 [server.Accumulo] INFO : table.balancer =
org.apache.accumulo.server.master.balancer.DefaultLoadBalancer
20 18:20:00,886 [server.Accumulo] INFO : table.bloom.enabled = false
20 18:20:00,887 [server.Accumulo] INFO : table.bloom.error.rate = 0.5%
20 18:20:00,887 [server.Accumulo] INFO : table.bloom.hash.type = murmur
20 18:20:00,887 [server.Accumulo] INFO : table.bloom.key.functor =
org.apache.accumulo.core.file.keyfunctor.RowFunctor
20 18:20:00,887 [server.Accumulo] INFO : table.bloom.load.threshold = 1
20 18:20:00,887 [server.Accumulo] INFO : table.bloom.size = 1048576
20 18:20:00,887 [server.Accumulo] INFO : table.cache.block.enable =
false
20 18:20:00,887 [server.Accumulo] INFO : table.cache.index.enable = true
20 18:20:00,887 [server.Accumulo] INFO :
table.compaction.major.everything.idle = 1h
20 18:20:00,887 [server.Accumulo] INFO : table.compaction.major.ratio =
3
20 18:20:00,887 [server.Accumulo] INFO : table.compaction.minor.idle =
5m
20 18:20:00,888 [server.Accumulo] INFO :
table.compaction.minor.logs.threshold = 3
20 18:20:00,888 [server.Accumulo] INFO : table.failures.ignore = false
20 18:20:00,888 [server.Accumulo] INFO : table.file.blocksize = 0B
20 18:20:00,888 [server.Accumulo] INFO : table.file.compress.blocksize =
100K
20 18:20:00,888 [server.Accumulo] INFO :
table.file.compress.blocksize.index = 128K
20 18:20:00,888 [server.Accumulo] INFO : table.file.compress.type = gz
20 18:20:00,888 [server.Accumulo] INFO : table.file.max = 15
20 18:20:00,888 [server.Accumulo] INFO : table.file.replication = 0
20 18:20:00,888 [server.Accumulo] INFO : table.file.type = rf
20 18:20:00,889 [server.Accumulo] INFO : table.groups.enabled = 
20 18:20:00,889 [server.Accumulo] INFO : table.scan.max.memory = 1M
20 18:20:00,889 [server.Accumulo] INFO :
table.security.scan.visibility.default = 
20 18:20:00,889 [server.Accumulo] INFO : table.split.threshold = 1G
20 18:20:00,889 [server.Accumulo] INFO : table.walog.enabled = true
20 18:20:00,889 [server.Accumulo] INFO : trace.password = <hidden>
20 18:20:00,889 [server.Accumulo] INFO : trace.port.client = 12234
20 18:20:00,889 [server.Accumulo] INFO : trace.table = trace
20 18:20:00,889 [server.Accumulo] INFO : trace.user = root
20 18:20:00,890 [server.Accumulo] INFO :
tserver.bloom.load.concurrent.max = 4
20 18:20:00,890 [server.Accumulo] INFO : tserver.bulk.assign.threads = 1
20 18:20:00,890 [server.Accumulo] INFO : tserver.bulk.process.threads =
1
20 18:20:00,890 [server.Accumulo] INFO : tserver.bulk.retry.max = 3
20 18:20:00,890 [server.Accumulo] INFO : tserver.cache.data.size = 50M
20 18:20:00,890 [server.Accumulo] INFO : tserver.cache.index.size = 128M
20 18:20:00,890 [server.Accumulo] INFO : tserver.client.timeout = 3s
20 18:20:00,890 [server.Accumulo] INFO :
tserver.compaction.major.concurrent.max = 3
20 18:20:00,890 [server.Accumulo] INFO : tserver.compaction.major.delay
= 30s
20 18:20:00,890 [server.Accumulo] INFO :
tserver.compaction.major.thread.files.open.max = 10
20 18:20:00,891 [server.Accumulo] INFO :
tserver.compaction.minor.concurrent.max = 4
20 18:20:00,891 [server.Accumulo] INFO : tserver.default.blocksize = 1M
20 18:20:00,891 [server.Accumulo] INFO : tserver.dir.memdump = /tmp
20 18:20:00,891 [server.Accumulo] INFO : tserver.files.open.idle = 1m
20 18:20:00,891 [server.Accumulo] INFO : tserver.hold.time.max = 5m
20 18:20:00,891 [server.Accumulo] INFO : tserver.logger.count = 2
20 18:20:00,891 [server.Accumulo] INFO : tserver.logger.strategy =
org.apache.accumulo.server.tabletserver.log.RoundRobinLoggerStrategy
20 18:20:00,891 [server.Accumulo] INFO : tserver.logger.timeout = 30s
20 18:20:00,891 [server.Accumulo] INFO : tserver.memory.lock = false
20 18:20:00,892 [server.Accumulo] INFO : tserver.memory.manager =
org.apache.accumulo.server.tabletserver.LargestFirstMemoryManager
20 18:20:00,892 [server.Accumulo] INFO : tserver.memory.maps.max = 128M
20 18:20:00,892 [server.Accumulo] INFO :
tserver.memory.maps.native.enabled = true
20 18:20:00,892 [server.Accumulo] INFO :
tserver.metadata.readahead.concurrent.max = 8
20 18:20:00,892 [server.Accumulo] INFO :
tserver.migrations.concurrent.max = 1
20 18:20:00,892 [server.Accumulo] INFO : tserver.monitor.fs = true
20 18:20:00,892 [server.Accumulo] INFO : tserver.mutation.queue.max =
256K
20 18:20:00,892 [server.Accumulo] INFO : tserver.port.client = 9997
20 18:20:00,892 [server.Accumulo] INFO : tserver.port.search = false
20 18:20:00,893 [server.Accumulo] INFO :
tserver.readahead.concurrent.max = 16
20 18:20:00,893 [server.Accumulo] INFO : tserver.scan.files.open.max =
100
20 18:20:00,893 [server.Accumulo] INFO : tserver.server.threadcheck.time
= 1s
20 18:20:00,893 [server.Accumulo] INFO : tserver.server.threads.minimum
= 2
20 18:20:00,893 [server.Accumulo] INFO : tserver.session.idle.max = 1m
20 18:20:00,893 [server.Accumulo] INFO :
tserver.tablet.split.midpoint.files.max = 30
20 18:20:00,893 [server.Accumulo] INFO : tserver.walog.max.size = 1G
20 18:20:00,894 [tabletserver.TabletServer] INFO : Tablet server
starting on 127.0.0.1
20 18:20:00,919 [util.FileSystemMonitor] INFO : Filesystem monitor
started
20 18:20:00,951 [tabletserver.NativeMap] ERROR: Failed to load native
map library
/home/hadoop/accumulo/lib/native/map/libNativeMap-Linux-i386-32.so
java.lang.UnsatisfiedLinkError: Can't load library:
/home/hadoop/accumulo/lib/native/map/libNativeMap-Linux-i386-32.so
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1706)
    at java.lang.Runtime.load0(Runtime.java:770)
    at java.lang.System.load(System.java:1003)
    at
org.apache.accumulo.server.tabletserver.NativeMap.loadNativeLib(NativeMap.java:144)
    at
org.apache.accumulo.server.tabletserver.NativeMap.<clinit>(NativeMap.java:156)
    at
org.apache.accumulo.server.tabletserver.TabletServerResourceManager.<init>(TabletServerResourceManager.java:123)
    at
org.apache.accumulo.server.tabletserver.TabletServer.config(TabletServer.java:2959)
    at
org.apache.accumulo.server.tabletserver.TabletServer.main(TabletServer.java:3085)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.accumulo.start.Main$1.run(Main.java:89)
    at java.lang.Thread.run(Thread.java:662)
20 18:20:00,999 [tabletserver.TabletServer] ERROR: Uncaught exception in
TabletServer.main, exiting
java.lang.IllegalArgumentException: Maximum tablet server map memory
134,217,728 and block cache sizes 186,646,528 is too large for this JVM
configuration 132,579,328
    at
org.apache.accumulo.server.tabletserver.TabletServerResourceManager.<init>(TabletServerResourceManager.java:134)
    at
org.apache.accumulo.server.tabletserver.TabletServer.config(TabletServer.java:2959)
    at
org.apache.accumulo.server.tabletserver.TabletServer.main(TabletServer.java:3085)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.accumulo.start.Main$1.run(Main.java:89)
    at java.lang.Thread.run(Thread.java:662)

  -------- Original Message --------
 Subject: Re: Request Apache Accumulo error help using Hadoop and
 Zookeeper in a test environment
 From: Eric Newton <eric.newton@gmail.com>
 Date: Tue, December 20, 2011 8:21 pm
 To: accumulo-user@incubator.apache.org
 
 The client can't find servers in zookeeper... clients are trying to
talk to the tablet servers, so check the tablet server logs for errors: 

$ tail -f 100 /home/hadoop/accumulo/logs/tserver*.log
 

This is a single-host set-up, right?


Make sure /home/hadoop/walogs exists.


-Eric

On Tue, Dec 20, 2011 at 7:36 PM, Rob Burkhard <rob@robburkhard.com>
wrote:
  I am setting up a test environment using apache accumulo ver 1.4.0,
  hadoop ver 0.20.2 and zookeeper ver 3.3.3. Hadoop and Zookeeper work
  great together, but when I start accumulo shell using the procedures
on
  apache incubator, accumulo complains:
 
 
  18 12:44:38,746 [impl.ServerClient] WARN : Failed to find an available
  server in the list of servers: []
  18 12:44:38,846 [impl.ServerClient] WARN : Failed to find an available
  server in the list of servers: []
  18 12:44:38,947 [impl.ServerClient] WARN : Failed to find an available
  server in the list of servers: []
  18 12:44:39,048 [impl.ServerClient] WARN : Failed to find an available
  server in the list of servers: []
  18 12:44:39,148 [impl.ServerClient] WARN : Failed to find an available
  server in the list of servers: []
  18 12:44:39,249 [impl.ServerClient] WARN : Failed to find an available
  server in the list of servers: []
  18 12:44:39,350 [impl.ServerClient] WARN : Failed to find an available
  server in the list of servers: []
  18 12:44:39,450 [impl.ServerClient] WARN : Failed to find an available
  server in the list of servers: []
 
 
  I have followed the instructions carefully on accumulo-incubator and
  built this several times on Centos and Ubuntu OS witht he same
results.
 
  I have also manipulated the memory settings with no change in
  performance. Please see my Accumulo, Hadoop and Zoo configuration
files
  below.
  Any help would be appreciated. This is driving me crazy :)
 
 
 
  cat zoo/conf/zoo.cfg
  # The number of milliseconds of each tick
  tickTime=2000
  # The number of ticks that the initial
  # synchronization phase can take
  initLimit=10
  # The number of ticks that can pass between
  # sending a request and getting an acknowledgement
  syncLimit=5
  # the directory where the snapshot is stored.
  dataDir=/home/hadoop/zoo/dataDir
  # the port at which the clients will connect
  clientPort=2181
  maxClientCnxns=100
 
 
  cat hadoop/conf/core-site.xml
  <?xml version="1.0"?>
  <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
 
  <!-- Put site-specific property overrides in this file. -->
 
  <configuration>
  <property>
  <name>fs.default.name</name>
  <value>hdfs://localhost:9000</value>
  </property>
  </configuration>
 
 
 
  cat hadoop/conf/hadoop-env.sh
  # Set Hadoop-specific environment variables here.
 
  # The only required environment variable is JAVA_HOME. All others are
  # optional. When running a distributed configuration it is best to
  # set JAVA_HOME in this file, so that it is correctly defined on
  # remote nodes.
 
  # The java implementation to use. Required.
  export JAVA_HOME=/usr/lib/jvm/java-6-openjdk
 
  # Extra Java CLASSPATH elements. Optional.
  # export HADOOP_CLASSPATH=
 
  # The maximum amount of heap to use, in MB. Default is 1000.
  # export HADOOP_HEAPSIZE=2000
 
  # Extra Java runtime options. Empty by default.
  # export HADOOP_OPTS=-server
 
  # Command specific options appended to HADOOP_OPTS when specified
  export HADOOP_NAMENODE_OPTS="-Dcom.sun.management.jmxremote
  $HADOOP_NAMENODE_OPTS"
  export HADOOP_SECONDARYNAMENODE_OPTS="-Dcom.sun.management.jmxremote
  $HADOOP_SECONDARYNAMENODE_OPTS"
  export HADOOP_DATANODE_OPTS="-Dcom.sun.management.jmxremote
  $HADOOP_DATANODE_OPTS"
  export HADOOP_BALANCER_OPTS="-Dcom.sun.management.jmxremote
  $HADOOP_BALANCER_OPTS"
  export HADOOP_JOBTRACKER_OPTS="-Dcom.sun.management.jmxremote
  $HADOOP_JOBTRACKER_OPTS"
  # export HADOOP_TASKTRACKER_OPTS=
  # The following applies to multiple commands (fs, dfs, fsck, distcp
 etc)
  # export HADOOP_CLIENT_OPTS
 
  # Extra ssh options. Empty by default.
  # export HADOOP_SSH_OPTS="-o ConnectTimeout=1 -o
  SendEnv=HADOOP_CONF_DIR"
 
  # Where log files are stored. $HADOOP_HOME/logs by default.
  # export HADOOP_LOG_DIR=${HADOOP_HOME}/logs
 
  # File naming remote slave hosts. $HADOOP_HOME/conf/slaves by default.
  # export HADOOP_SLAVES=${HADOOP_HOME}/conf/slaves
 
  # host:path where hadoop code should be rsync'd from. Unset by
default.
  # export HADOOP_MASTER=master:/home/$USER/src/hadoop
 
  # Seconds to sleep between slave commands. Unset by default. This
  # can be useful in large clusters, where, e.g., slave rsyncs can
  # otherwise arrive faster than the master can service them.
  # export HADOOP_SLAVE_SLEEP=0.1
 
  # The directory where pid files are stored. /tmp by default.
  # export HADOOP_PID_DIR=/var/hadoop/pids
 
  # A string representing this instance of hadoop. $USER by default.
  # export HADOOP_IDENT_STRING=$USER
 
  # The scheduling priority for daemon processes. See 'man nice'.
  # export HADOOP_NICENESS=10
 
 
  accumulo-env.sh
  #! /usr/bin/env bash
 
  # Licensed to the Apache Software Foundation (ASF) under one or more
  # contributor license agreements. See the NOTICE file distributed with
  # this work for additional information regarding copyright ownership.
  # The ASF licenses this file to You under the Apache License, Version
  2.0
  # (the "License"); you may not use this file except in compliance with
  # the License. You may obtain a copy of the License at
  #
  # http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
 
  ###
  ### Configure these environment variables to point to your local
  installations.
  ###
  ### The functional tests require conditional values, so keep this
 style:
  ###
  ### test -z "$JAVA_HOME" && export JAVA_HOME=/usr/local/lib/jdk-1.6.0
  ###
  ###
  ### Note that the -Xmx -Xms settings below require substantial free
  memory:
  ### you may want to use smaller values, especially when running
  everything
  ### on a single machine.
  ###
 
  test -z "$JAVA_HOME" && export
  JAVA_HOME=/usr/lib/jvm/java-6-sun
  test -z "$HADOOP_HOME" && export
  HADOOP_HOME=/home/hadoop/hadoop-0.20.2
  test -z "$ACCUMULO_LOG_DIR" && export
  ACCUMULO_LOG_DIR=/home/hadoop/accumulo/logs
  test -z "$ZOOKEEPER_HOME" && export
  ZOOKEEPER_HOME=/home/hadoop/zoo/
  if [ -f ${ACCUMULO_HOME}/conf/accumulo.policy ]
  then
  POLICY="-Djava.security.manager
  -Djava.security.policy=${ACCUMULO_HOME}/conf/accumulo.policy"
  fi
  test -z "$ACCUMULO_TSERVER_OPTS" && export
  ACCUMULO_TSERVER_OPTS="${POLICY} -Xmx128m -Xms128m -Xss128k"
  test -z "$ACCUMULO_MASTER_OPTS" && export
  ACCUMULO_MASTER_OPTS="${POLICY} -Xmx128m -Xms128m"
  test -z "$ACCUMULO_MONITOR_OPTS" && export
  ACCUMULO_MONITOR_OPTS="${POLICY} -Xmx128m -Xms128m"
  test -z "$ACCUMULO_GC_OPTS" && export ACCUMULO_GC_OPTS="-Xmx128m
  -Xms128m"
  test -z "$ACCUMULO_LOGGER_OPTS" && export
  ACCUMULO_LOGGER_OPTS="-Xmx128m -Xms128m"
  test -z "$ACCUMULO_GENERAL_OPTS" && export
  ACCUMULO_GENERAL_OPTS="-XX:+UseConcMarkSweepGC
  -XX:CMSInitiatingOccupancyFraction=75"
  test -z "$ACCUMULO_OTHER_OPTS" && export ACCUMULO_OTHER_OPTS="-Xmx128m
  -Xms128m"
  export ACCUMULO_LOG_HOST=`(grep -v '^#' $ACCUMULO_HOME/conf/masters ;
  echo localhost ) 2>/dev/null | head -1`
 
  accumulo-site.xml
  <?xml version="1.0" encoding="UTF-8"?>
  <!--
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements. See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version
  2.0
  (the "License"); you may not use this file except in compliance with
  the License. You may obtain a copy of the License at
 
  http://www.apache.org/licenses/LICENSE-2.0
 
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  -->
  <?xml-stylesheet type="text/xsl" href="configuration.xsl"?>
 
  <configuration>
  <!--
  Put your site-specific accumulo configurations here.
 
  The available configuration values along with their defaults
  are documented in docs/config.html
 
  Unless you are simply testing at your workstation, you will most
  definitely need to change the three entries below.
  -->
  <property>
  <name>instance.zookeeper.host</name>
  <value>localhost:2181</value>
  <description>list of zookeeper servers</description>
  </property>
  <property>
  <name>logger.dir.walog</name>
  <value>/home/hadoop/walogs</value>
  <description>local directory for write ahead logs</description>
  </property>
 
  <property>
  <name>instance.secret</name>
  <value>cloud</value>
  <description>A secret unique to a given instance that all servers
  must know in order to communicate with one another.
  Change it before initialization. To change it later
  use ./bin/accumulo org.apache.accumulo.server.util.ChangeSecret
  [oldpasswd] [newpasswd],
  and then update this file.
  </description>
  </property>
 
  <property>
  <name>tserver.memory.maps.max</name>
  <value>128M</value>
  </property>
 
  <property>
  <name>tserver.cache.data.size</name>
  <value>50M</value>
  </property>
 
  <property>
  <name>tserver.cache.index.size</name>
  <value>128M</value>
  </property>
 
  <property>
  <name>general.classpaths</name>
  <value>
  $ACCUMULO_HOME/src/server/target/classes/,
  $ACCUMULO_HOME/src/core/target/classes/,
  $ACCUMULO_HOME/src/start/target/classes/,
  $ACCUMULO_HOME/src/examples/target/classes/,
  $ACCUMULO_HOME/lib/[^.].$ACCUMULO_VERSION.jar,
  $ACCUMULO_HOME/lib/[^.].*.jar,
  $ZOOKEEPER_HOME/[^.].*.jar,
  $HADOOP_HOME/conf,
  $HADOOP_HOME/[^.].*.jar,
  $HADOOP_HOME/lib/[^.].*.jar,
  </value>
  <description>Classpaths that accumulo checks for updates and class
  files.
  When using the Security Manager, please remove the
  ".../target/classes/" values.
  </description>
  </property>
 
  </configuration>


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