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https://issues.apache.org/jira/browse/HBASE-4608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13181846#comment-13181846
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Zhihong Yu commented on HBASE-4608:
-----------------------------------
>From
>https://builds.apache.org/job/PreCommit-HBASE-Build/693//testReport/org.apache.hadoop.hbase.regionserver.wal/TestHLog/testAppendClose/:
{code}
java.net.BindException: Problem binding to localhost/127.0.0.1:50150 : Address
already in use
at org.apache.hadoop.ipc.Server.bind(Server.java:227)
{code}
Strange, was the above caused by parallel test case execution ?
> HLog Compression
> ----------------
>
> Key: HBASE-4608
> URL: https://issues.apache.org/jira/browse/HBASE-4608
> Project: HBase
> Issue Type: New Feature
> Reporter: Li Pi
> Assignee: Li Pi
> Attachments: 4608v1.txt, 4608v5.txt, 4608v6.txt, 4608v7.txt,
> 4608v8fixed.txt
>
>
> The current bottleneck to HBase write speed is replicating the WAL appends
> across different datanodes. We can speed up this process by compressing the
> HLog. Current plan involves using a dictionary to compress table name, region
> id, cf name, and possibly other bits of repeated data. Also, HLog format may
> be changed in other ways to produce a smaller HLog.
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