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HBASE-28753 FNFE may occur when accessing the region.jsp of the replica region (branch-2) #6118

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Merged
merged 3 commits into from
Jul 27, 2024
Merged

HBASE-28753 FNFE may occur when accessing the region.jsp of the replica region (branch-2) #6118

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ed34401
FNFE may occur when accessing the region.jsp of the replica region
guluo2016 Jul 22, 2024
3462c25
Fix the blanks issue
guluo2016 Jul 25, 2024
994e0b8
Add primary region check and fix the type conversion issue
guluo2016 Jul 26, 2024
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31 changes: 19 additions & 12 deletions hbase-server/src/main/resources/hbase-webapps/regionserver/region.jsp
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Original file line number Diff line number Diff line change
Expand Up @@ -21,22 +21,26 @@
import="java.util.Collection"
import="java.util.Date"
import="java.util.List"
import="org.apache.hadoop.fs.FileSystem"
import="org.apache.hadoop.hbase.client.RegionInfo"
import="org.apache.hadoop.hbase.client.RegionInfoDisplay"
import="org.apache.hadoop.hbase.regionserver.HRegionServer"
import="org.apache.hadoop.hbase.regionserver.HStoreFile"
import="org.apache.hadoop.hbase.regionserver.Region"
import="org.apache.hadoop.hbase.regionserver.Store"
import="org.apache.hadoop.hbase.regionserver.StoreFile"
import="org.apache.hadoop.hbase.regionserver.HRegion"
import="org.apache.hadoop.hbase.regionserver.HStore"
%>
<%
String regionName = request.getParameter("name");
HRegionServer rs = (HRegionServer) getServletContext().getAttribute(HRegionServer.REGIONSERVER);
FileSystem fs = rs.getFileSystem();

Region region = rs.getRegion(regionName);
HRegion region = rs.getRegion(regionName);
String displayName;
boolean isReplicaRegion = false;
if (region != null) {
displayName = RegionInfoDisplay.getRegionNameAsStringForDisplay(region.getRegionInfo(),
rs.getConfiguration());
isReplicaRegion = region.getRegionInfo().getReplicaId() > RegionInfo.DEFAULT_REPLICA_ID;
} else {
displayName = "region {" + regionName + "} is not currently online on this region server";
}
Expand All @@ -54,10 +58,10 @@
</div>

<% if(region != null) { //
List<? extends Store> stores = region.getStores();
for (Store store : stores) {
List<HStore> stores = region.getStores();
for (HStore store : stores) {
String cf = store.getColumnFamilyName();
Collection<? extends StoreFile> storeFiles = store.getStorefiles(); %>
Collection<HStoreFile> storeFiles = store.getStorefiles(); %>

<h3>Column Family: <%= cf %></h3>

Expand All @@ -73,17 +77,20 @@
<th>Len Of Biggest Cell</th>
<th>Key Of Biggest Cell</th>
</tr>
<% for(StoreFile sf : storeFiles) { %>
<% int count = 0;
for(HStoreFile sf : storeFiles) {
if (isReplicaRegion && !fs.exists(sf.getPath())) continue;
count++; %>
<tr>
<td><a href="storeFile.jsp?name=<%= sf.getEncodedPath() %>"><%= sf.getPath() %></a></td>
<td><%= (int) (rs.getFileSystem().getLength(sf.getPath()) / 1024 / 1024) %></td>
<td><%= (int) (fs.getLength(sf.getPath()) / 1024 / 1024) %></td>
<td><%= new Date(sf.getModificationTimestamp()) %></td>
<td><%= String.format("%,1d", ((HStoreFile)sf).getFileInfo().getHFileInfo().getLenOfBiggestCell()) %></td>
<td><%= ((HStoreFile)sf).getFileInfo().getHFileInfo().getKeyOfBiggestCell() %></td>
<td><%= String.format("%,1d", sf.getFileInfo().getHFileInfo().getLenOfBiggestCell()) %></td>
<td><%= sf.getFileInfo().getHFileInfo().getKeyOfBiggestCell() %></td>
</tr>
<% } %>

<p> <%= storeFiles.size() %> StoreFile(s) in set.</p>
<p> <%= count %> StoreFile(s) in set. <%= isReplicaRegion ? "The information about storefile(s) may not up-to-date because it's not the primary region." : "" %></p>
</table>
<% }
}%>
Expand Down