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https://issues.apache.org/jira/browse/HBASE-25567?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17283400#comment-17283400
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Jun Yuan commented on HBASE-25567:
----------------------------------
In HRegionFileSystem.loadRegionInfoFileContent(), the number of bytes read to
pbuf is not necessarily equals to pbuf.length. Should use readFully() to read
the intended number of bytes
{code:java}
int read = in.read(pbuf);
if (read != pblen) throw new IOException("read=" + read + ", wanted=" + pblen);
{code}
> HRegionFileSystem.loadRegionInfoFileContent throws IOException occasionally
> ---------------------------------------------------------------------------
>
> Key: HBASE-25567
> URL: https://issues.apache.org/jira/browse/HBASE-25567
> Project: HBase
> Issue Type: Bug
> Components: regionserver
> Affects Versions: 2.1.4
> Reporter: Jun Yuan
> Priority: Major
>
> We invoked HRegionFileSystem.loadRegionInfoFileContent to read .regioninfo
> from hdfs, but get an exception occasionally
> {code:java}
> Caused by: java.io.IOException: read=3, wanted=4
> at org.apache.hadoop.hbase.client.RegionInfo.parseFrom(RegionInfo.java:743)
> at
> org.apache.hadoop.hbase.regionserver.HRegionFileSystem.loadRegionInfoFileContent(HRegionFileSystem.java:856){code}
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