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Createtableコマンドを使用してAccumulo内でテーブルを作成しようとしましたが、スタックしていたことがわかりました。私はcreatetableコマンドをキャンセルする前に約20分待った。Accumuloのcreatetableコマンドがスタックしてテーブルを作成しません
createtable test_table
私は1つのマスターと2錠のサーバーを持っているし、私の主人とタブレットの1が死亡したことが分かりました。私はその特定のタブレットサーバーのポート9997にtelnetできず、ポート29999（accumulo-site.xmlのmaster.port.client）にもtelnetできませんでした。私は死んだサーバーのtserverのログを見たとき、私は次のエントリを見た。
2016-05-10 02:12:07,456 [zookeeper.DistributedWorkQueue] INFO : Got unexpected z
ookeeper event: None for /accumulo/be4f66be-1508-4314-9bff-888b56d9b0ce/recovery
2016-05-10 02:12:23,883 [zookeeper.ZooCache] WARN : Saw (possibly) transient exc
eption communicating with ZooKeeper, will retry
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode =
Session expired for /accumulo/be4f66be-1508-4314-9bff-888b56d9b0ce/tables
at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.getChildren(ZooKeeper.java:1472)
at org.apache.accumulo.fate.zookeeper.ZooCache$1.run(ZooCache.java:210)
at org.apache.accumulo.fate.zookeeper.ZooCache.retry(ZooCache.java:162)
at org.apache.accumulo.fate.zookeeper.ZooCache.getChildren(ZooCache.java
:221)
at org.apache.accumulo.core.client.impl.Tables.exists(Tables.java:142)
at org.apache.accumulo.server.tabletserver.LargestFirstMemoryManager.tab
leExists(LargestFirstMemoryManager.java:149)
at org.apache.accumulo.server.tabletserver.LargestFirstMemoryManager.get
MemoryManagementActions(LargestFirstMemoryManager.java:175)
at org.apache.accumulo.tserver.TabletServerResourceManager$MemoryManagem
entFramework.manageMemory(TabletServerResourceManager.java:408)
at org.apache.accumulo.tserver.TabletServerResourceManager$MemoryManagem
entFramework.access$400(TabletServerResourceManager.java:318)
at org.apache.accumulo.tserver.TabletServerResourceManager$MemoryManagem
entFramework$2.run(TabletServerResourceManager.java:346)
at org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.jav
a:35)
at java.lang.Thread.run(Thread.java:745)
2016-05-10 02:12:23,884 [zookeeper.ZooCache] WARN : Saw (possibly) transient exc
eption communicating with ZooKeeper, will retry
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode =
Session expired for /accumulo/be4f66be-1508-4314-9bff-888b56d9b0ce/tables/!0/con
f/table.classpath.context
at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
at org.apache.accumulo.fate.zookeeper.ZooCache$2.run(ZooCache.java:264)
at org.apache.accumulo.fate.zookeeper.ZooCache.retry(ZooCache.java:162)
at org.apache.accumulo.fate.zookeeper.ZooCache.get(ZooCache.java:289)
at org.apache.accumulo.fate.zookeeper.ZooCache.get(ZooCache.java:238)
at org.apache.accumulo.server.conf.ZooCachePropertyAccessor.get(ZooCache
PropertyAccessor.java:117)
at org.apache.accumulo.server.conf.ZooCachePropertyAccessor.get(ZooCache
PropertyAccessor.java:103)
at org.apache.accumulo.server.conf.TableConfiguration.get(TableConfigura
tion.java:99)
at org.apache.accumulo.tserver.constraints.ConstraintChecker.classLoader
Changed(ConstraintChecker.java:93)
at org.apache.accumulo.tserver.tablet.Tablet.checkConstraints(Tablet.jav
a:1225)
at org.apache.accumulo.tserver.TabletServer$8.run(TabletServer.java:2848
)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:51
1)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
access$301(ScheduledThreadPoolExecutor.java:180)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.
run(ScheduledThreadPoolExecutor.java:294)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.
java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor
.java:617)
at java.lang.Thread.run(Thread.java:745)
2016-05-10 02:12:23,887 [zookeeper.ZooReader] WARN : Saw (possibly) transient ex
ception communicating with ZooKeeper
org.apache.zookeeper.KeeperException$SessionExpiredException: KeeperErrorCode =
Session expired for /accumulo/be4f66be-1508-4314-9bff-888b56d9b0ce/tservers/accu
mulo.tablet.2:9997
at org.apache.zookeeper.KeeperException.create(KeeperException.java:127)
at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1045)
at org.apache.accumulo.fate.zookeeper.ZooReader.getStatus(ZooReader.java
:132)
at org.apache.accumulo.fate.zookeeper.ZooLock.process(ZooLock.java:383)
at org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.j
ava:522)
at org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:498)
2016-05-10 02:12:24,252 [watcher.MonitorLog4jWatcher] INFO : Changing monitor lo
g4j address to accumulo.master:4560
2016-05-10 02:12:24,252 [watcher.MonitorLog4jWatcher] INFO : Enabled log-forward
ing
マスターサーバーのログにも同じスタックトレースがあります。私の飼い猫が走っています。
最初は、ディスクの問題だと思っていました。たぶん、スペースがなかったでしょう。しかし、そうではありませんでした。私はaccumulo instance.volumesでfsckを実行し、HEALTHYステータスを返しました。
誰でも正確に何が起こったのか、また可能な場合は避ける方法を知っていますか？
EDIT：tracer_accumulo.master.logでも同じスタックトレースがあります。