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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14575) Reduce scope of compactions holding region lock
Date Fri, 30 Oct 2015 19:10:27 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14983101#comment-14983101
] 

Ted Yu commented on HBASE-14575:
--------------------------------

Without the lock scope reduction, the test fails with:
{code}
testAtomicBulkLoad(org.apache.hadoop.hbase.regionserver.TestHRegionServerBulkLoad)  Time elapsed:
698.467 sec  <<< ERROR!
java.lang.RuntimeException: Deferred
	at org.apache.hadoop.hbase.regionserver.TestHRegionServerBulkLoad.runAtomicBulkloadTest(TestHRegionServerBulkLoad.java:357)
	at org.apache.hadoop.hbase.regionserver.TestHRegionServerBulkLoad.testAtomicBulkLoad(TestHRegionServerBulkLoad.java:332)
Caused by: org.apache.hadoop.hbase.client.RetriesExhaustedException:
Failed after attempts=36, exceptions:
Fri Oct 30 11:57:06 PDT 2015, null, java.net.SocketTimeoutException: callTimeout=60000, callDuration=77951:
row '' on table 'atomicBulkLoad' at region=atomicBulkLoad,,1446231338683.0235425b9d8c662d4839bf99e57d0072.,
hostname=10.22.24.71,53802,1446231335391, seqNum=2

Caused by: java.net.SocketTimeoutException: callTimeout=60000, callDuration=77951: row ''
on table 'atomicBulkLoad' at region=atomicBulkLoad,,1446231338683.0235425b9d8c662d4839bf99e57d0072.,
hostname=10.22.24.71,53802,1446231335391, seqNum=2
Caused by: org.apache.hadoop.hbase.ipc.CallTimeoutException: callId=6837, method=Scan, rpcTimeout=10000,
param {region { type: REGION_NAME value: "atomicBulkLoad,,1446231338683.0235425b9d8c662d4839bf99e57d0072."
} scan { column { family: "family_0000" } column { family: "family_0001" } column { family:
"family_0002" } column { family: "family_0003" } column { family: "family_0004" } column {
family: "family_0005" } column { family: "family_0006" } column { family: "family_0007" }
column { family: "family_0008" } column { family: "family_0009" } max_versions: 1 cache_blocks:
true max_result_size: 2097152 caching: 2147483647 } number_of_rows: 0 close_scanner: false
client_handles_partials: true client_handles_heartbeats: true track_scan_metrics: false}
{code}

> Reduce scope of compactions holding region lock
> -----------------------------------------------
>
>                 Key: HBASE-14575
>                 URL: https://issues.apache.org/jira/browse/HBASE-14575
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Compaction, regionserver
>            Reporter: Nick Dimiduk
>            Assignee: Nick Dimiduk
>         Attachments: 14575-v1.patch, 14575-v2.patch, 14575-v3.patch, 14575.v00.patch
>
>
> Per [~devaraj]'s idea on parent issue, let's see if we can reduce the scope of critical
section under which compactions hold the region read lock.



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