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[SPARK-16071][SQL] Checks size limit when doubling the array size in BufferHolder #13829
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| Original file line number | Diff line number | Diff line change |
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@@ -45,7 +45,12 @@ public BufferHolder(UnsafeRow row) { | |
| } | ||
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| public BufferHolder(UnsafeRow row, int initialSize) { | ||
| this.fixedSize = UnsafeRow.calculateBitSetWidthInBytes(row.numFields()) + 8 * row.numFields(); | ||
| int bitsetWidthInBytes = UnsafeRow.calculateBitSetWidthInBytes(row.numFields()); | ||
| if (row.numFields() > (Integer.MAX_VALUE - initialSize) / 8) { | ||
| throw new UnsupportedOperationException( | ||
| "Cannot create BufferHolder from input UnsafeRow because it is too big."); | ||
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We only get the |
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| } | ||
| this.fixedSize = bitsetWidthInBytes + 8 * row.numFields(); | ||
| this.buffer = new byte[fixedSize + initialSize]; | ||
| this.row = row; | ||
| this.row.pointTo(buffer, buffer.length); | ||
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@@ -55,6 +60,11 @@ public BufferHolder(UnsafeRow row, int initialSize) { | |
| * Grows the buffer by at least neededSize and points the row to the buffer. | ||
| */ | ||
| public void grow(int neededSize) { | ||
| if (neededSize > Integer.MAX_VALUE / 2 - totalSize()) { | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. shall we move this check into the if branch below? then we can just check
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| throw new UnsupportedOperationException( | ||
| "Cannot grow BufferHolder by size " + neededSize + " because the size after growing " + | ||
| "exceeds size limitation " + Integer.MAX_VALUE / 2); | ||
| } | ||
| final int length = totalSize() + neededSize; | ||
| if (buffer.length < length) { | ||
| // This will not happen frequently, because the buffer is re-used. | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. One more thought: Can we grow the buffer to
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. Currently the limit for
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. I think it's good to try our best to finish user's job instead of failing it. And it's not a lot of work, should be worth it, just grow the buffer to |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,38 @@ | ||
| /* | ||
| * Licensed to the Apache Software Foundation (ASF) under one or more | ||
| * contributor license agreements. See the NOTICE file distributed with | ||
| * this work for additional information regarding copyright ownership. | ||
| * The ASF licenses this file to You under the Apache License, Version 2.0 | ||
| * (the "License"); you may not use this file except in compliance with | ||
| * the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package org.apache.spark.sql.catalyst.expressions.codegen | ||
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| import org.apache.spark.SparkFunSuite | ||
| import org.apache.spark.sql.catalyst.expressions.UnsafeRow | ||
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| class BufferHolderSuite extends SparkFunSuite { | ||
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There was a problem hiding this comment. Choose a reason for hiding this commentThe reason will be displayed to describe this comment to others. Learn more. This is a good starting point! Most of the low-level codegen utils are not tested, e.g. |
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| test("SPARK-16071 Check the size limit to avoid integer overflow") { | ||
| var e = intercept[UnsupportedOperationException] { | ||
| new BufferHolder(new UnsafeRow(Int.MaxValue / 8)) | ||
| } | ||
| assert(e.getMessage.contains("it is too big")) | ||
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| val holder = new BufferHolder(new UnsafeRow(1000)) | ||
| holder.grow(1000) | ||
| e = intercept[UnsupportedOperationException] { | ||
| holder.grow(2e10.toInt) | ||
| } | ||
| assert(e.getMessage.contains("exceeds size limitation")) | ||
| } | ||
| } | ||
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maybe
nullBitsLengthis a better name?