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https://issues.apache.org/jira/browse/HBASE-5699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14252687#comment-14252687
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Elliott Clark commented on HBASE-5699:
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Yeah +1 on getting it into 1.0. For me I think that probably means with only
one wal configured by default.
For what it's worth, we've seen larger improvements from running multi wals but
we also have more disks per machine. So could be cluster dependent.
> Run with > 1 WAL in HRegionServer
> ---------------------------------
>
> Key: HBASE-5699
> URL: https://issues.apache.org/jira/browse/HBASE-5699
> Project: HBase
> Issue Type: Improvement
> Components: Performance, wal
> Reporter: binlijin
> Assignee: Sean Busbey
> Priority: Critical
> Attachments: HBASE-5699.3.patch.txt, HBASE-5699.4.patch.txt,
> HBASE-5699_#workers_vs_MiB_per_s_1x1col_512Bval_wal_count_1,2,4.tiff,
> HBASE-5699_disabled_and_regular_#workers_vs_MiB_per_s_1x1col_512Bval_wal_count_1,2,4.tiff,
> HBASE-5699_write_iops_multiwal-1_1_to_200_threads.tiff,
> HBASE-5699_write_iops_multiwal-2_10,50,120,190,260,330,400_threads.tiff,
> HBASE-5699_write_iops_multiwal-4_10,50,120,190,260,330,400_threads.tiff,
> HBASE-5699_write_iops_multiwal-6_10,50,120,190,260,330,400_threads.tiff,
> HBASE-5699_write_iops_upstream_1_to_200_threads.tiff, PerfHbase.txt,
> hbase-5699_multiwal_400-threads_stats_sync_heavy.txt,
> hbase-5699_total_throughput_sync_heavy.txt,
> results-hbase5699-upstream.txt.bz2, results-hbase5699-wals-1.txt.bz2,
> results-updated-hbase5699-wals-2.txt.bz2,
> results-updated-hbase5699-wals-4.txt.bz2,
> results-updated-hbase5699-wals-6.txt.bz2
>
>
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