Sonar Scan/Qube：(error) java.lang.IllegalStateException: Unrecoverable indexation failures

Sonar Scannerを実行した後、下記のようなエラーが出ていました。

java.lang.IllegalStateException: Unrecoverable indexation failures: 1 errors among 1 requests
	at org.sonar.server.es.IndexingListener$1.onFinish(IndexingListener.java:39)
	at org.sonar.server.es.BulkIndexer.stop(BulkIndexer.java:131)
	at org.sonar.server.measure.index.ProjectMeasuresIndexer.doIndex(ProjectMeasuresIndexer.java:162)
	at org.sonar.server.measure.index.ProjectMeasuresIndexer.indexOnAnalysis(ProjectMeasuresIndexer.java:87)
	at org.sonar.ce.task.projectanalysis.step.IndexAnalysisStep.execute(IndexAnalysisStep.java:45)
	at org.sonar.ce.task.step.ComputationStepExecutor.executeStep(ComputationStepExecutor.java:81)
	at org.sonar.ce.task.step.ComputationStepExecutor.executeSteps(ComputationStepExecutor.java:72)
	at org.sonar.ce.task.step.ComputationStepExecutor.execute(ComputationStepExecutor.java:59)
	at org.sonar.ce.task.projectanalysis.taskprocessor.ReportTaskProcessor.process(ReportTaskProcessor.java:81)
	at org.sonar.ce.taskprocessor.CeWorkerImpl$ExecuteTask.executeTask(CeWorkerImpl.java:212)
	at org.sonar.ce.taskprocessor.CeWorkerImpl$ExecuteTask.run(CeWorkerImpl.java:194)
	at org.sonar.ce.taskprocessor.CeWorkerImpl.findAndProcessTask(CeWorkerImpl.java:160)
	at org.sonar.ce.taskprocessor.CeWorkerImpl$TrackRunningState.get(CeWorkerImpl.java:135)
	at org.sonar.ce.taskprocessor.CeWorkerImpl.call(CeWorkerImpl.java:87)
	at org.sonar.ce.taskprocessor.CeWorkerImpl.call(CeWorkerImpl.java:53)
	at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:125)
	at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:69)
	at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:78)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
	at java.base/java.lang.Thread.run(Thread.java:834)

原因：
ストレージ足りないようです。flood stage disk watermark [95%] exceeded

解決方法：
１、log fileを探す

$ sudo find / -name es.log\* | less

２、es7 folderを削除

参考：https://stackoverflow.com/questions/74913401/sonarqube-unrecoverable-indexation-failures-1-errors-among-1-requests-check-el