Return-Path: X-Original-To: archive-asf-public-internal@cust-asf2.ponee.io Delivered-To: archive-asf-public-internal@cust-asf2.ponee.io Received: from cust-asf.ponee.io (cust-asf.ponee.io [163.172.22.183]) by cust-asf2.ponee.io (Postfix) with ESMTP id 33217200BFD for ; Sun, 1 Jan 2017 03:47:00 +0100 (CET) Received: by cust-asf.ponee.io (Postfix) id 34CA2160B35; Sun, 1 Jan 2017 02:47:00 +0000 (UTC) Delivered-To: archive-asf-public@cust-asf.ponee.io Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by cust-asf.ponee.io (Postfix) with SMTP id 7D569160B28 for ; Sun, 1 Jan 2017 03:46:59 +0100 (CET) Received: (qmail 57421 invoked by uid 500); 1 Jan 2017 02:46:58 -0000 Mailing-List: contact issues-help@hbase.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Delivered-To: mailing list issues@hbase.apache.org Received: (qmail 57404 invoked by uid 99); 1 Jan 2017 02:46:58 -0000 Received: from arcas.apache.org (HELO arcas) (140.211.11.28) by apache.org (qpsmtpd/0.29) with ESMTP; Sun, 01 Jan 2017 02:46:58 +0000 Received: from arcas.apache.org (localhost [127.0.0.1]) by arcas (Postfix) with ESMTP id 51B0B2C0059 for ; Sun, 1 Jan 2017 02:46:58 +0000 (UTC) Date: Sun, 1 Jan 2017 02:46:58 +0000 (UTC) From: "Ted Yu (JIRA)" To: issues@hbase.apache.org Message-ID: In-Reply-To: References: Subject: [jira] [Commented] (HBASE-17400) TestHRegion#testWritesWhileScanning occasionally hangs in MVCC#.waitForRead() MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 archived-at: Sun, 01 Jan 2017 02:47:00 -0000 [ https://issues.apache.org/jira/browse/HBASE-17400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15790411#comment-15790411 ] Ted Yu commented on HBASE-17400: -------------------------------- Looking at waitForRead() : {code} synchronized (readWaiters) { while (readPoint.get() < e.getWriteNumber()) { if (count % 100 == 0 && count > 0) { LOG.warn("STUCK: " + this + ", waiting for " + e.getWriteNumber()); } count++; try { readWaiters.wait(10); } catch (InterruptedException ie) { // We were interrupted... finish the loop -- i.e. cleanup --and then // on our way out, reset the interrupt flag. interrupted = true; } } } {code} I wonder what the cleanup refers to. I only see readWaiters.wait() call. > TestHRegion#testWritesWhileScanning occasionally hangs in MVCC#.waitForRead() > ----------------------------------------------------------------------------- > > Key: HBASE-17400 > URL: https://issues.apache.org/jira/browse/HBASE-17400 > Project: HBase > Issue Type: Bug > Reporter: Ted Yu > Attachments: testHRegionWithInMemoryFlush-0e4866.out > > > Looping TestHRegionWithInMemoryFlush with commit 0e48665641b16cd9b250503696b926a568063654 , I got the following error at iteration #33: > {code} > Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 600.163 sec <<< FAILURE! - in org.apache.hadoop.hbase.regionserver.TestHRegionWithInMemoryFlush > org.apache.hadoop.hbase.regionserver.TestHRegionWithInMemoryFlush Time elapsed: 600.019 sec <<< ERROR! > org.junit.runners.model.TestTimedOutException: test timed out after 10 minutes > at java.lang.Object.wait(Native Method) > at org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl.waitForRead(MultiVersionConcurrencyControl.java:218) > at org.apache.hadoop.hbase.regionserver.MultiVersionConcurrencyControl.completeAndWait(MultiVersionConcurrencyControl.java:149) > at org.apache.hadoop.hbase.regionserver.HRegion.getNextSequenceId(HRegion.java:2731) > at org.apache.hadoop.hbase.regionserver.HRegion.internalPrepareFlushCache(HRegion.java:2446) > at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2342) > at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2313) > at org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:2303) > at org.apache.hadoop.hbase.regionserver.HRegion.doClose(HRegion.java:1600) > at org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:1505) > at org.apache.hadoop.hbase.regionserver.HRegion.close(HRegion.java:1455) > at org.apache.hadoop.hbase.HBaseTestingUtility.closeRegionAndWAL(HBaseTestingUtility.java:374) > at org.apache.hadoop.hbase.regionserver.TestHRegion.testWritesWhileScanning(TestHRegion.java:3985) > {code} > See attached test output for details. -- This message was sent by Atlassian JIRA (v6.3.4#6332)